Database Develop

[KERNEL]CivZ SkyWalker_RF2.5rm (MAX OC 1.504GHz) for ICS / New bootloader(6/7/2013)

These kernels should work on every stock ICS LG rom or custom rom based on LG ICS rom.
Civato kernels build with V30B LG source & compiled on google 4.4.3 toolchain.
Thanks to :
WKPARK patchesRamHack and first OC patch
Also want to thank pengus77 , ezterry, godmachine81 , Thor2002ro, Faux123,chad0989 , Pidozz
NOTE:
I'm not a DEV and not pretending to be one, I'm a android enthusiast.
I would like to thank all XDA members that are helpful.
I build and mod stuff for my personal needs and then I share them.
Do I want something in return? NO.
You don't like it, no problem, there are enough good DEV's with there kernel to help you along.
So on request I started a separate thread for this kernel , it started with my rom and the need for a good custom kernel.
Click to expand...
Click to collapse
I don't provide any guarantee or a lawer if your phone explode and you get accused and charged for a terrorist act.
To be clear , the kernel got the POSSIBILITY to OC and tweak , if you don't do anything it runs at stock settings.
Meaning = MAX speed 1000MHz , Noop scheduler , interactive governor= LG default settings.
CivZ_SkyWalker_RF2.5rm
Sithlord in 3 different versions.
Ramhack or no ramhack
usb FastCharge
Compiled with Optimized flags-O3/-O2
-OC up to 1.5GHz , UV/OV , default boot up speed is 1.0GHz
-Minimum UV 650mV , Maximum OV 1400mV
Best CPU control app when you want to UV is free for XDA members SETCPU , download 2.24 or buy it, SUPPORT the devs! (it allows you to type in voltage changes and not only slide), Remember only steps of 10mV are real values , if you apply a step of 25mV it will actually be 20mV. So use setcpu to type in voltage steps of 10mV , 20mV , 30mV, ...............
-GPU 3D & 2D ( scales from 300 - 425MHz)
(stock is 300)
-Terminal kernel control commands
(Led light , FSYNC control , ZRam , Modules, SWAP increase)
-USB FastCharge (disabled at default)
-Available RamHack :No ramhack /24mb / 32mb
- Extra zRam 96Mb(disabled by default)
-Governors:
Powersaver
PERFORMANCE
USERSPACE
ONDEMAND
INTERACTIVE in dynamic mode (default)
CONSERVATIVE
LulzActive
(LulzActive tegrak tweak app included)
LionHeart
-Shedulers
NOOP(default)
DEADLINE
CFQ
SIO
ROW
BFQ-v5
Zen
VR
-Led control thanks to pengus77 (Max at default)
-Dynamic FSYNC @ Faux123 & Pengus77 (Disabled at default)
-Extra Modules loadable/unloadable on the fly
-Voltages / Frequencies:
NO 5mV steps as they are not supported by the LG regulator (Thanks Pengus77 for the heads-up)
750mV(216MHz) ; 780mV(312MHz) ; 800mV(456MHz) ; 850mV(608MHz) ; 900mV(760MHz); 920mV(816MHz) ; 950mV(912MHz) ; 1000mV(1000MHz boot up speed) ; 1050mV(1100MHz) 1100mV( 1200MHz); 1150mV(1300MHz); 1200mV(1408MHz) ; 1300mV(1504MHz)
Kernel control options to use with Terminal: (Settings are applied immediately and stick even after reboot now)
For a list of the commands on your phone (in case you forgot)
Type in terminal
su(enter)civz(enter)
Dynamic FSYNC control: (disabled by default)
Terminal command:
su (enter) df_on (enter) = This will enable Dynamic FSYNC (setting are applied immediately and sticks after reboot)
su (enter) df_off (enter) = This will disable Dynamic FSYNC (setting are applied immediately and sticks after reboot)
Led Brightness control: (Maximum brightness by default)
Terminal command:
su (enter) ledmin (enter) = This will set led at minimum brightness (setting are applied immediately and sticks after reboot)
su (enter) ledmed (enter) = This will set led at medium brightness (setting are applied immediately and sticks after reboot)
su (enter) ledmax (enter) = This will set led at maximum brightness (setting are applied immediately and sticks after reboot)
Load/unload Extra Modules : (Modules are unloaded by default)
(Cifs; hfs; hfs+; md4; nls_utf8; sha256; sha512)
Terminal command:
su (enter) m_load (enter) = This will load the extra modules (setting are applied immediately and sticks after reboot)
su (enter) m_unload (enter) = This will unload the extra modules (setting are applied immediately and sticks after reboot)
Enable/Disable EXTRA ZRam96MB: (Disabled by default)
Terminal command:
su (enter) zram_on (enter) = This will enable ZRam96MB (Reboot is needed to apply changes and sticks after reboot)
su (enter) zram_off (enter) = This will disable ZRam96MB (Reboot is needed to apply changes and sticks after reboot)
Enable/Disable LG 131MB SWAP or 260MB SWAP: (131MB is LG default)
Terminal command:
su (enter) lg_swap_of (enter) = This will disable LG swap (Reboot is needed to apply changes and sticks after reboot)
su (enter) lg_swap130_on (enter) = This will enable LG 130MB swap (Reboot is needed to apply changes and sticks after reboot)
su(enter)lg_swap260_on(enter) = This will enable LG 260MB swap (Reboot is needed to apply changes and sticks after reboot)
Note on LG swap: The 131Mb is default of LG
LG got this enabled in the stock LG rom and it uses the dev/block/mmcblk0p4 (unused partition) for it so not the same as ZRam that uses /dev/block/zram0 file. The LG Swap partition is enabled by default , I just add this command so if a user don't want to use the LG swap it can be done now with a single command.
Change system swappines value: (Android default is 60)
(setting are applied immediately and sticks after reboot)
Terminal command:
su(enter)swappines_0(enter) = set swappines at 0 = system waits very long to swap , Kills tasks very quick
su(enter)swappines_20(enter) = set swappines at 20 = Performance setting for gaming
su(enter)swappines_40(enter) = set swappines at 40 = Performance setting and some multitasking
su(enter)swappines_60(enter) = set swappines at 60 = Androids default , balanced setting
su(enter)swappines_80(enter) = set swappines at 80 = Aimed for multitasking/Balanced
su(enter)swappines_100(enter) = set swappines at 100 = Aimed for extreme multitasking , NOT GAMING
Update GPS lto
(this is done automatically with a init.d script , so in case it failed, here a way to do this manually)
Terminal command:
su (enter) gps_update (enter) = This will update gps lto file , if the file is not older then 5 days it won' t update.
Change system Fatsdormancy setting:
(setting are applied immediately and sticks after reboot)
Terminal command:
su(enter)fastdormancy_on(enter)=enable Fastdormancy = android default
su(enter)fastdormancy_off(enter)=disable Fastdormancy
Note about fastcharge option in kernel:
It is OFF at default, user needs to enable it.
Use at own risk, it is meant to use on car/plain chargers, don't know the effect in the long term.
And I don't know the effect when ussed on a PC usb connection.
The "FastCharge" app from playstore is installed in data, use it to toggle ON/OFF.
Or use the following terminal commands:
To enable it = echo 1 > /sys/kernel/fast_charge/force_fast_charge
To disable it= echo 0 > /sys/kernel/fast_charge/force_fast_charge
If you use fastcharge on a pc, usb will not be mounted and no data can be received or send.
Based on the work of chad0989 , Pidozz and Pengus77.
Click to expand...
Click to collapse
Click to expand...
Click to collapse
LG-SU660-VERSIONS​
CivZ_SkyWalker_RF2.5rm-SU660
CivZ_SkyWalker_RF2.5rm_24RH-SU660
CivZ_SkyWalker_RF2.5rm_32RH-SU660
​ Side note on USB BSOD (screen off and pluging in usb resulting in BSOD)
I noticed that with enabled Dynamic FSYNC or a to high OC it can still occur.
So in that case please turn on screen before plugging in USB.
​
Click to expand...
Click to collapse
​
Changelog:
[New in RF1.3-Cleaned out the kernel source
-Powersaver governor activated
-Optimized deadline scheduler
-Nvidia USB plugin BSOD fix
New in RF1.4:
-Added BFQ-v5r1 scheduler
@ iBluemind
(More info see Q&A)
-More versions.
New in RF1.5:
-Fix for governor switching
(coming from hotplug to a other governor made one core stuck in sleep state , resulting in bad performance and instability).
-3 New governors: "Aggressive" , "Gallimaufry", "Sakuractive".
-Most governors optimized.
(reverted BFQ to V5 version, performance is smoother I think)
-New "Zen" scheduler and most schedulers optimized
-Reduced android logger time.
-Increased readahead (1024kb instead of the default 128kb)
-Included mmc_cap hard brick fix. (Don't know if it is needed on this phone but can't hurt, a lot of samsung phones died this way when wiping data in recovery)
-Controle led brightness
ledmin ; ledmed; ledmax
NEW RF1.5_FC edition
Added USB Fast Charge in this edition.
8-Feb-2013:
RF1.6:
-Only compiled on -03 CF flags and with FastCharge option.
-GPU 3D clock up to 400MHz
(Before it was 350 where stock is 300)
-Patch for EXt4 error.
-CPU Freq lock off
-Reverted deadline scheduler
-Ramdisk got back the old settings for better battery life when not OC'd.
-216 and 312 MHz default voltage dropped with 25mV.
-Ramp-up speed on interactive back to 80 , you can change this in setcpu.
10-Feb-2013
RF1.7:
-Max CPU OC is now 1.5GHz
-New Lower default Voltage table:
750mV(216MHz) ; 775mV(312MHz) ; 800mV(456MHz) ; 850mV(608MHz) ; 900mV(760MHz); 925mV(816MHz) ; 950mV(912MHz) ; 975mV(1000MHz) ; 1050mV(1100MHz) 1125mV( 1200MHz) ; 1150mV( 1248MHz) ;1200mV(1300MHz) 1250mV(1352MHz) ; 1275mV(1404MHz) ; 1300mV( 1456MHz) ; 1325mV(1500MHz)
-Voltage settings changed in tegra2_dvfs.c so the 1.5GHz is stable.
-GPU 2D clock OC'd up to 400MHz
(stock is 300)
-Secondary clock epp & mpe OC'd to 350MHz
(stock is 300)
-ARCH power enabled
12-Feb-2013:
RF1.8 released
Update for stability reason that some users experienced.
Thanks to all the testers and there feedback.
-2D & 3D clock decreased back to 350MHz OC
(this is the RF1.4 setting as this is the best for all users)
Performance gain is not enough to justified to OC to 400MHz.
The 400MHz version will not be released public as it is not good for most users, please don't ask for it.
-Secondary mpe clock back to stock for the stability reason.
-RATE_LIMIT of 3D back to stock for the stability reason.
13-Feb-2013:
RF1.9
-Bug fix for Reboot /shutdown freeze when OC'd.
-Voltage table updated.
-Lower voltage for 1500 and 1456 MHz
Minimum UV voltage is now 675mV
-3D GPU 400MHz OC.
16-Feb-2013:
RX2.0
New Voltage table for higher stability.
New CPU max speed 1.544GHz.
New GPU 2D clock of 400MHz.
New terminal kernel commands.
Compiled with new flags (-O2 with some parts of -O3 flags to reduce code size).
Updated voltage table to gain stability when OC'd.
Dynamic FSYNC @ Faux123 integrated (Disabled at default)
Kernell-HZ increased to 256HZ (stock is 100) for better performance and smoothness.
User HZ increased to 200HZ (stock is 100) for smoothness
Support for NTFS
Support for NFS 3/4
HFS & HFS+ as modules
CIFS as module
md4 as module
sha512 as module
utf8 as module.
16-Feb-2013:
RX2.0_b released
Fix for the terminal commands error.
21-Feb-2013:
RX2.1 Released
Reverted User and Kenrel HZ to stock for stability.
Reverted back to -O3 custom flags
New terminal commands for ZRam and Extra modules
USB OTG (on the go) enabled (testing)
22-Feb-2013:
RX2.2 released:
Changed some custom flags for decrease of code size.
Reverted OTG setting (not working and causing problems)
Shed_Features back to stock setting (causing USB pluggin BSOD)
New Terminal command 'civz"
I hope this is a 100% rock solid stable version and I'm truly sorry for the many releases the last few days.
I wish to bring a stable kernel so some features are reverted as wow factor is not what I look for.01-Mar-2013:
CivZ_SithLord_再见 released
Main goal 100% stable kernel with good battery life, that is why the following changes are applied:
Forced governor linked patch (Make sure both cpu's run at the same governor, even with "setcpu & antutu") thanks Ezterry.
Max OC 1500MHz with lower voltage table (see in kernel info) , this to reduce battery consumption.
Removed a bunch of governors as they caused problems in some situations (so it seemed), see kernel ifo for what is included.
LulzActive Governor (with app) , tweaked by me to be less aggressive.
02-Mar-2013:
CivZ_SithLord_再见_r2 released
Reverted voltage table to RX2.2 release as some users had problems on max OC with lower rail voltages.
I can UV with -50mV on all frequencies but that is all up to the quality of your tegra2 cpu.07-Mar-2013:
CivZ_SkyWalker_RF1.0 released
New name because the OC code totaly changed compared to SithLord.
Totally new OC code with new frequencies and very low default voltages.(Thanks to my friend ezterry)
Max = Min frequency really fixed (now it won't be stuck at 750MHz when setting max frequency below 760MHz and not just showing the value but actually applying it so now you can set screen-off max at example: 312MHz in a profile with a cpu app).
Dynamic MODE enable on the interactive governor.
Min Max cpu frequency code changed and editable in defconfig before compiling kernel(Thanks to my friend ezterry)
Compiling optimizations flags changed (again thanks to my friend ezterry)
LulzActive governor balanced settings with max screen-off frequency of 608MHz
I would like to thank all the beta testers and I hope the result is up to your expectations!
08-Mar-2013:
CivZ_SkyWalker_RF1.1 released
More aggressive lulzactive governor settings on user request
New terminal command for LG 131MB swap
New terminal command for manual updating GPS lto file
Also a SU660 version available
96ZRam disabled by default from now on (not needed in my opinion, swap already got 131Mb on unused partition, but it is still available as a option)
10-Mar-2013:
CivZ_SkyWalker_RF1.2 released
New Max OC speed of 1544MHz
2D GPU back to 400MHz OC
OC code updated
New Terminal command to increase LG SWAP to 260MB
Updated FSYNC with latest Pengus77 release
Enabled ARCH-Power
SU660 24RH version available
"civz" terminal command updated with latest commands
13-Mar-2013:
CivZ_SkyWalker_RF2.0 released
Reverted MAX OC to 1504MHz (this way I could drop rail voltages so it will stay cooler, settings of RF1.0)
New Voltage table (no 5mV steps as pengus77 mentioned the regulator doesn't except 5mV steps)
Real min voltage is now 650mV (again thanks for pengus77 pointing me this out that board power and regulator had to be modded)Best CPU control app when you want to UV is free for XDA members SETCPU , download 2.24 or buy it, SUPPORT the devs! (it allows you to type in voltage changes and not only slide), Remember only steps of 10mV are real values , if you apply a step of 25mV it will actually be 20mV. So use setcpu to type in voltage steps of 10mV , 20mV , 30mV, ..
New Governor , LionHeart , tweaked by me to be very battery friendly.
GPU 2 D & 3D scales from 300 - 450MAX . What does this mean: When you play a stressfull game it will go up to Max 450MHz if it can depending on = It scales with voltage and process ID , lower voltage/ lower stress/ lower CPU speed = lower GPU speed. I hope this is the best solution for all users and best for battery/performance.
FastCharge updated to pengus77 edition.
Kernel Panic Timeout increased to 10 so a automatic reboot can be prevented when running out of memory on multitasking.
SU660 gets all versions.
FOR RF2.0 I would like to thank Pengus77 for his contribution on the voltage control and the updates of FSYNC and FastCharge.
I would also like to thank my good friend ezterry and godmachine81 for the OC code and GPU code.
Next I thank all my beta testers for the info and stressing there phone.
14-Mar-2013:
CivZ_SkyWalker_RF2.0-b released
New terminal commands to control the swappines
LG terminal command name change !!!
civz command updated
The rest of the kernel is 100% the same!
23-Mar-2013:
CivZ_SkyWalker_RF2.2-b released
New secondary , GPU frequency table.
3D Clock scales max to 425MHz.
2D clock scales up to 400MHz max (only when needed in heavy load)
USB connection delay patch
Fastdormancy terminal command
29-Mar-2013:
CivZ_SkyWalker_RF2.3rm released
gspca_main.ko module moved to optional modules
Stripped of all debugging = Lighter and optimized code
Fixed some code errors while compiling
06-Jul-2013:
CivZ_SkyWalker_RF2.5rm released
SetCPU 3.1.0 and higher reverted voltage fixed so on older versions of setCPU this kernel won't report correctly.
Note on LG SWAP increase:
Remember that on stock LG rom the default LG swap is 131MB. If you change kernel that doesn't got this terminal option and you changed the swap size or disabled it , no problem the swap commands are installed in system/bin so if you didn't delete them you can always use it. This does not count for other terminal command that come with the kernel.
Side note on USB BSOD
It is very random and still not 100% solved.
I noticed that with enabled Dynamic FSYNC or a to high OC it can still occur.
Just turn on your screen before connecting to pc and safe yourself a battery pull.
Click to expand...
Click to collapse
​
Side note:
Kernels comes as a boot.img = ramdisk with zImage.
Reason is that I made some changes in ramdisk. , init.d support.......
The meaning of this kernel is if you don't OC you get supurb battery life and 100% stability. If you start changing default governors and schedulers it will and can have a effect on battery life and OC to much with to much UV it will get unstable.
I recommend 1.2-1.3GHz for 24/7 use and not more. Governors can have a great effect on battery life. The flexibility in the kernel is there for the user to pick his/her favorite setting.
Source see second post!
More info about Sithlord and the effect of RamHack and Zram

Thank you! you are the best developer.
antutu with CivZ_SkyWalker_RF1.0 released - 7561
antutu with CivZ_SkyWalker_RF2.0 released - 7026
nothing has changed, all standard
Why is that?

SuRMaJ said:
Thank you! you are the best developer.
antutu with CivZ_SkyWalker_RF1.0 released - 7561
antutu with CivZ_SkyWalker_RF2.0 released - 7026
nothing has changed, all standard
Why is that?
Click to expand...
Click to collapse
Did some benchmarks.
All with 50mV UV and lulzactive /row
1000 MHz = 7002 points
1200MHz = 7480 points
1504 MHz = 8701 points
That is like 99% the same as RF1.0
Don't only look at benchmarks , look at user experience.
RF2.0 is a lot more balanced then 1.0

could you please tell me how to build a su660 kernel form p990 sources? thanks

New RF2.0-B
xzmu said:
could you please tell me how to build a su660 kernel form p990 sources? thanks
Click to expand...
Click to collapse
Linux , Time , source.
I think there are enough great guides here on XDA on how to...
---------------------------------------------------------------------------------------------------------------------------------------
14-Mar-2013:
CivZ_SkyWalker_RF2.0-b released
New terminal commands to control the swappines
LG terminal command name change !!!
civz command updated
The rest of the kernel is 100% the same!
How does it work: (so you got some inside info , please also take a look into the zips bin files for the people that want to learn a little more , this way you get a better understanding of what it does when you type in the commands)
A sysctl.conf is installed in system/etc
When you type in the command , the sysctl.conf is edited to hold the value for after a reboot
the vm swappines is changed when you typed in the command so it is applied immediately and it sticks after reboot.
If you should delete the sysctl.conf in system/etc for some reason the swappines will return to android default of 60.
Click to expand...
Click to collapse
PLEASE TAKE A LOOK AT THE NEW TERMINAL COMMANDS AS SOME CHANGED BY NAME!
Kernel control options to use with Terminal: (Settings are applied immediately and stick even after reboot now)
Enable/Disable LG 131MB SWAP or 260MB SWAP: (131MB is LG default)
Terminal command:
su (enter) lg_swap_of (enter) = This will disable LG swap (Reboot is needed to apply changes and sticks after reboot)
su (enter) lg_swap130_on (enter) = This will enable LG 131MB swap (Reboot is needed to apply changes and sticks after reboot)
su(enter)lg_swap260_on(enter) = This will enable LG 260MB swap (Reboot is needed to apply changes and sticks after reboot)
Note on LG swap: The 131Mb is default of LG
LG got this enabled in the stock LG rom and it uses the dev/block/mmcblk0p4 (unused partition) for it so not the same as ZRam that uses /dev/block/zram0 file. The LG Swap partition is enabled by default , I just add this command so if a user don't want to use the LG swap it can be done now with a single command.
Change system swappines value: (Android default is 60) (setting are applied immediately and sticks after reboot)
Terminal command:
su(enter)swappines_0(enter) = set swappines at 0 = system waits very long to swap , Kills tasks very quick
su(enter)swappines_20(enter) = set swappines at 20 = Performance setting for gaming
su(enter)swappines_40(enter) = set swappines at 40 = Performance setting and some multitasking
su(enter)swappines_60(enter) = set swappines at 60 = Androids default , balanced setting
su(enter)swappines_80(enter) = set swappines at 80 = Aimed for multitasking/Balanced
su(enter)swappines_100(enter) = set swappines at 100 = Aimed for extreme multitasking , NOT GAMING
Click to expand...
Click to collapse
​ SU660-VERSIONS
CivZ_SkyWalker_RF2.0-SU660-b
CivZ_SkyWalker_RF2.0_24RH-SU660-b
CivZ_SkyWalker_RF2.0_32RH-SU660-b
Side note on USB BSOD (screen off and pluging in usb resulting in BSOD)
I noticed that with enabled Dynamic FSYNC or a to high OC it can still occur.
So in that case please turn on screen before plugging in USB.
Enjoy!

My phone is unhappy with 1400 & 1500 OC
don't feel the need anyway! heheh

Thanks for your work hard. I like your kernel. But my phone is used old bootloader. Could you build this kernel for Old bootloder?

Re: [KERNEL]CivZ SkyWalker_RF2.0-b (MAX OC 1.504GHz) for ICS / New bootloader
nguyenletuquynh said:
Thanks for your work hard. I like your kernel. But my phone is used old bootloader. Could you build this kernel for Old bootloder?
Click to expand...
Click to collapse
Mr.Civato only build kernel for ICS based ROM which uses NEW BL, So I guess the answer would be "NO"
Sent from my LG-P990 using xda app-developers app

Can't wait to get my hands on this update, really a big thank you to Sir Civato for including SU660,
Is there a possibility to have a none overclocked kernel for GPU sir?
P.S. Im still on 1.2 and it gave me no problems and this is the first time my device performed at its best on the battery and performance perspective. Can't wait to update 1.2 to 2.0b with FLEX_ICER!

I LOVE YOU Civato!!
really glad you're breathing life to this lonely ghost town.
My Set-up:
Flex_ICER 4.6
SkyWalker 2.0b
default freq
lionheart -50UV
+ row
gaming/surfing and overall performance is superb!
I can't really give relevant feedback regarding Battery Life since I'm a heavy DATA user.
Screen Off:
216-312mhz
both -60uv
powersave gov.
it sleeps but not die

This is sick! Great job! I hope next release you'll add smartassv2.

it will work on this ROM right?
http://forum.xda-developers.com/showthread.php?t=2173094
Thanks in advance

WasifSal said:
it will work on this ROM right?
http://forum.xda-developers.com/showthread.php?t=2173094
Thanks in advance
Click to expand...
Click to collapse
yes, ofc! as long as it's stock ICS based ROM that uses New BL

genemini said:
yes, ofc! as long as it's stock ICS based ROM that uses New BL
Click to expand...
Click to collapse
I want to use other roms.

:fingers-crossed::fingers-crossed: :angel:

RF2.2 released for SU660
23-Mar-2013:
CivZ_SkyWalker_RF2.2-b released = SEE OP
New secondary , GPU frequency table.
3D Clock scales max to 425MHz.
2D clock scales up to 400MHz max (only when needed in heavy load)
USB connection delay patch
Fastdormancy terminal command

awesome
awesome! gonna try the latest one out on Flex_ICER! Thank you Sir Civato :highfive:

Battery life is nearly doubled , on stock settings. WOW I cant think of what sir civato did to the latest release, pretty awesome x99:victory:

2.3 released
29-Mar-2013:
CivZ_SkyWalker_RF2.3rm released
gspca_main.ko module moved to optional modules
Stripped of all debugging = Lighter and optimized code
Fixed some code errors while compiling
LG-SU660-VERSIONS
CivZ_SkyWalker_RF2.3rm-SU660
​ CivZ_SkyWalker_RF2.3rm_24RH-SU660
CivZ_SkyWalker_RF2.3rm_32RH-SU660​
Code:
Older kernel versions:
LG-SU660-VERSIONS
[URL="http://d-h.st/cOR"]CivZ_SkyWalker_RF2.2-SU660-b[/URL]
[URL="http://d-h.st/l9W"]CivZ_SkyWalker_RF2.2_24RH[/URL][URL="http://d-h.st/l9W"]-SU660-b[/URL]
[URL="http://d-h.st/85i"]CivZ_SkyWalker_RF2.2_32RH[/URL][URL="http://d-h.st/85i"]-SU660-b[/URL]
​

civato said:
29-Mar-2013:
CivZ_SkyWalker_RF2.3rm released
Click to expand...
Click to collapse
Trying this one out now sir on stock P990! Thank you sir Civato :highfive:
Love and respect :good:

[KERNEL] [P6800 JB 4.1.2] [22 Mar] ROOT | ExTweaks | exFAT | SkyHigh Kernel [5.0.0]

[KERNEL] [P6800 JB 4.1.2] [22 Mar] ROOT | ExTweaks | exFAT | SkyHigh Kernel [5.0.0 FINAL]
** FOR P6800 (GSM/3G) device running JB 4.1.2 DXMD3 ONLY !! **
I am UpInTheAir part time kernel dev (hack) and Chef of SGT 7.7 JB & ICS ROMs, and now bring to you my P6800 Jellybean SkyHigh Kernel.
-- STABLE FINAL RELEASE --
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching gitHub, XDA and SEARCH
FEATURES
* Based on official Samsung source JB DXMD3
* AUTO ROOT (only if you don't already have it)
insecure kernel
su binary 1.91
SuperSU 1.91
busyBox 1.20.2 linusyang installed to system/sbin​
* STABLE - under SkyHigh "default" values & conditions
* ExTweaks app support for almost all kernel configurations + more !!
Many descriptions are in the app ! If you require more info, don't be lazy, please SEARCH like I did !
CPU
Boot boost CPU freq
Boost CPU freq (not fully tested)
Cortex wakeup boost (not fully tested)
Max normal freq
CPU freq OC / UC
CFS settings – Arch power
CPU idle mode (sleep & awake)
Scaling max suspend freq
Scaling min suspend freq
Scaling min standby freq
CPU temp throttle
CPU VOLTAGE
Set voltage individually for each 18-step freq
CPU TUNING (Awake & Sleep)
Set default CPU governor
Set governor configuration
Enable/disable hotplug
BUS
Bus voltage group
Thresholds
IO Tuning
Int/ext sdcard read-ahead cache
Dynamic Fsync control
Dynamic dirty page writeback control
IO scheduler (awake & sleep)
MEMORY TUNING
OOM control (screen on/off)
Dirty background ratio
Dirty ratio
Clean RAM cache
zRAM
Swappiness
zRAM stats
KSM control
GPU CONTROL
VPLL/MPLL mode
Freq control
Voltage control
Threshold control
Stay-count control
DISPLAY
FB early suspend delay (CRT TV off animation for SUPPORTED ROM)
Touch screen sensitivity
SOUND
Master volume gain
Headphone
Mic
Speaker
TWEAKS
- CortexBrain-Background-Process control
- Check CortexBrain-Background-Process Service
TCP security
TCP speed
TCP RAM
IPV6 (enabled by default - does not actually switch off)
CPU
Memory
System
Kernel
IO
OTHER
- Cron Task Control
- Test Cron task service
- Cron reset
Clean RAM cache task every hour
Update AD blocker task every week
DB optimizing (sqlite3) task every day
Clean app cache task every day
Zipalign task every day
fstrim lagfix task every day
Cron test task jobs
Zipalign apps now
Zipalign on boot
DB optimization (sqlite3) now
DB optimization (sqlite3) on boot
Battery scaling calibration (fuel-gauge reset) now
Ad blocker update now
Remove Ad blocker
FILE SYSTEM MAINTENANCE / REPAIR
Partitions scan
Data FS repair on boot
extSdCard repair on boot
Fix permissions on boot
Fix permissions now
Trim FS partitions (fstrim lagfix) on boot
Trim FS partitions (fstrim lagfix) now
INIT.D SUPPORT
Enable init.d script run control
USB MASS STORAGE (UMS) MODE
MTP <> Mass storage mode
WIFI & GPS
Clean WIFI lease
TCP congestion control
GPS region
GPS zone check
Update time
ROOT
Install root now
Remove root now
Root check
Auto install root on boot
MODULES
Frandom control
XPAD control
ISO CD-ROM control
UDF CD-ROM/DVD control
PROFILES
Profile check
UpInTheAir & SkyHigh Default (you can configure & save values for each, but not change the actual profile name)
BACKUP & RESTORE
Backup User settings now
Restore User settings now
RE-BOOT
Re-boot into Recovery
BUG-REPORT
Kernel bug-report
App bug-report
Android logger control
Kernel printk control
Module logger control
INFO
* SkyHigh default CPU min/max 200 > 1400 MHz (13-step)
* 18-step CPU 100 > 1800 MHz (Recommend setting 200-1400/1600 MHz)
Default = 13-step 200 > 1400 MHz
Stock = 6-step 200 > 1400 MHz​
* No UV for stock frequencies 200-500-800-1000-1200-1400 MHz
* 4-step GPU : Default = 160-200-267-400 MHz
MPLL mode = 4-step GPU (default)
Stock = 2-step GPU (160-267 MHz)
Min freq = 50 MHz
Max MPLL freq = 400 MHz
Max VPLL freq = 520 MHz
Voltage = 800 > 1200 mV (+/- 50 mV increments)​
* GPU UV / UC / OC
160 MHz = 950 mV (-50 mV > stock 1000 mV)
200 MHz = 1000 mv
267 MHz = 1050 mV (-50 mV > stock 1100 mV)
400 MHz = 1100 mV​
* GPU Control
freq clock
voltage
step thresholds
stay counts​
GPU BENCHMARK BEFORE (3DMark app)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
GPU BENCHMARK AFTER @ 400 MHz (3DMark app)
* GPU VPLL mode optional
For devices that can't handle VPLL – use MPLL mode instead
http://forum.xda-developers.com/showpost.php?p=33720501&postcount=4181&nocache=1&z=1048045007703282
* Busfreq up & down threshold control
Stock / SkyHigh default = 23
* Busfreq (memory) voltage group
default group = 1 (stock)
available group options 1 > 7
L0 = 400 L1 = 267 L2 = 160 MHz
1 > {1150000, 1050000, 1050000} SkyHigh default / stock
2 > {1125000, 1025000, 1025000}
3 > {1100000, 1000000, 1000000}
4 > {1075000, 975000, 975000}
5 > {1050000, 950000, 950000}
6 > {1025000, 950000, 925000}
7 > {1000000, 925000, 900000}
* Set L2 bus (memory) speed from 133 > 160 MHz
- Default MHz now:
L0 = 400
L1 = 267
L2 = 160 MHz / 1000 mV (stock = 133 MHz / 950 mV)
* Adaptive vfs_cache_pressure on suspend / resume
Hard coded values :
- Set @ 10 = save battery on device suspend
- Set @ 60 = better smoothness on device resume
Low vfs_cache pressure values save battery while idle, while a low value also causes stutter with longer up times.
* Governors
pegasusq = SkyHigh default (siyah kernel version & "freq for responsiveness" tweaked to 500 MHz by me)
HYPER
scary
wheatley
abyssplug
lulzactiveq (siyah kernel version & tweaked by me)
lazy
hotplug
ondemand
performance
ZZMoove 0.7d​
* IO schedulers
SIO = SkyHigh default
ROW
VR
NOOP
Deadline
CFQ​
* SOUND CONTROL via ExTweaks app
* Thunderbolt scheduler IO Tweaks [pikachu01]
* Implemented kernel to report USB trickle charge (previously just reports discharging).
- Those devices without modified SystemUI.apk will now show battery charging animation whilst on USB power source
* Force USB charging source to be detected as AC
- faster USB charge using same circuitry
- limited by:
1. charging source max output
2. kernel - up to max 1500 mA (same is actual AC)​
* Auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot
* Reduced GUI lag
- Frandom
- fstrim lagfix - NOT ENABLED BY DEFAULT
- Disabled gentle fair sleepers
- RAM management OOM adj & minfree values from V6SuperCharger​
* Improved touch-screen sensitivity (on both battery and charge)
* Mount partitions NOATIME and NODIRATIME by default
* R/W and auto-mounting of exFAT USB-OTG & external sdcard using official Samsung Open Source modules v1.2.5
* modded ROM /system/etc/vold.fstab to permit exFAT mounting
* NTFS R/W OTG file system support (require app to mount)
* UDF/ISO file system support - BluRay (require app to mount) - not tested !
* Network filesystem support
In-built CIFS
In-built NFS (not tested)​
* TCP algorithms
- cubic = default
- reno
- westwood+ (some users of other devices have reported faster network throughput speeds)​
* In-built zRAM support
* LZ4 compression implemented & enabled for zRAM [psndna88 & Yank555.lu]
* Support paging of anonymous memory (Swap)
* General optimized for size
* Kernel compression = xz
* Support for iPad, iPhone, iPhone_3G/S, iPhone_4/4S, iPhone_5 (not tested as I don't own "rotten fruit" )
* UV motor -100 mV (3.1V → 3.0V)
* UV LED -100 mV (3.2V → 3.1V)
* fbearlysuspend control - allow CRT-off animation in SUPPORTED ROMs)
* Thermal throttle control (default on) – be careful here, do you want to melt your CPU?
* Dynamic read-ahead implemented and set at 1024 KB (variable)
* Int/External sdcard read ahead cache = variable KB
* Internal & external sdcard IO schedulers = SIO
* Dynamic FSync control v1.2 implemented and enabled
* Dynamic management of dirty page writebacks
* Android Logger Control disabled
* Linux printk Control disabled
* KSM support
* Custom bootanimation support
* Custom boot sound support
* Support for XPAD gamepad & rumblepad controller
* Reduce Android logger RAM usage
* Disabled kernel debugging to reduce zImage size
* Disabled some module logging
* Disable mali tracking debug
* Disable zRAM debug
* Triangle Away app support
* vm swappiness = 20 (performance)
* Free pagecache. dentries and inodes will be managed by /proc/sys/vm/vfs_cache_pressure
echo "1" > /proc/sys/vm/drop_caches
* System property accessory tweak values from V6SuperCharger
dalvik.vm.heapgrowthlimit 130m
dalvik.vm.heapsize 130m
persist.sys.purgeable_assets 1
windowsmgr.max_events_per_sec 90 (200 set as SkyHigh default)
* Virtual memory & kernel tweak
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
echo "10" > /proc/sys/fs/lease-break-time
echo "0" > /proc/sys/kernel/panic
echo "0" > /proc/sys/kernel/panic_on_oops
echo "0" > /proc/sys/vm/block_dump
echo "60" > /proc/sys/vm/dirty_background_ratio
echo "95" > /proc/sys/vm/dirty_ratio
echo "0" > /proc/sys/vm/laptop_mode
echo "15360" > /proc/sys/vm/min_free_kbytes
echo "4" > /proc/sys/vm/min_free_order_shift
echo "0" > /proc/sys/vm/oom_dump_tasks
echo "0" > /proc/sys/vm/oom_kill_allocating_task
echo "1" > /proc/sys/vm/overcommit_memory
echo "0" > /proc/sys/vm/panic_on_oom
#echo "20" > /proc/sys/vm/swappiness ########### Already implemented
#echo "10" > /proc/sys/vm/vfs_cache_pressure ########### Implemented adaptive vfs_cache_pressure on suspend (10) / resume (60)
* Misc tweaks for battery life
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
echo "65536" > /proc/sys/kernel/msgmax
echo "2048" > /proc/sys/kernel/msgmni
echo "500 512000 64 2048" > /proc/sys/kernel/sem
echo "2097152" > /proc/sys/kernel/shmall
echo "268435456" > /proc/sys/kernel/shmmax
echo "4096" > /proc/sys/kernel/shmmni
#
echo "524288" > /proc/sys/fs/file-max
echo "32000" > /proc/sys/fs/inotify/max_queued_events
echo "256" > /proc/sys/fs/inotify/max_user_instances
echo "10240" > /proc/sys/fs/inotify/max_user_watches
echo "0" > /proc/sys/kernel/sched_child_runs_first
echo "524288" > /proc/sys/kernel/threads-max
* TCP Speed & Security
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
# 3G TurboCharger Enhancement
#
# Google's public DNS settings
#
/system/bin/setprop net.dns1 8.8.8.8 ########### Not sticking
/system/bin/setprop net.dns2 8.8.4.4
#
# ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax
/system/bin/setprop net.tcp.buffersize.default 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.wifi 262144,524288,1048576,262144,524288,1048576
/system/bin/setprop net.tcp.buffersize.lte 262144,524288,3145728,262144,524288,3145728
/system/bin/setprop net.tcp.buffersize.hsdpa 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.evdo_b 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.umts 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.hspa 6144,87380,262144,6144,16384,262144
/system/bin/setprop net.tcp.buffersize.gprs 6144,8760,11680,6144,8760,11680
/system/bin/setprop net.tcp.buffersize.edge 6144,26280,35040,6144,16384,35040
#
# Queue size modifications
echo "20480" > /proc/sys/net/core/optmem_max
#echo "262144" > /proc/sys/net/core/rmem_default
echo "1048576" > /proc/sys/net/core/rmem_max
#echo "262144" > /proc/sys/net/core/wmem_default
echo "1048576" > /proc/sys/net/core/wmem_max
echo "50" > /proc/sys/net/unix/max_dgram_qlen
#
# Be sure that autotuning is in effect
echo "1" > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
#
echo "0" > /proc/sys/net/ipv4/ip_no_pmtu_disc
echo "1" > /proc/sys/net/ipv4/route/flush
echo "0" > /proc/sys/net/ipv4/tcp_ecn
echo "1" > /proc/sys/net/ipv4/tcp_fack
echo "1" > /proc/sys/net/ipv4/tcp_rfc1337
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_rmem ########### Not sticking
echo "1" > /proc/sys/net/ipv4/tcp_sack
echo "0" > /proc/sys/net/ipv4/tcp_timestamps
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_wmem ########### Not sticking
echo "6144" > /proc/sys/net/ipv4/udp_rmem_min
echo "6144" > /proc/sys/net/ipv4/udp_wmem_min
#
# Re-use sockets in time-wait state
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
#
# Hardening the TCP/IP stack to SYN attacks
echo "1024" > /proc/sys/net/ipv4/tcp_max_syn_backlog
echo "2" > /proc/sys/net/ipv4/tcp_syn_retries
echo "2" > /proc/sys/net/ipv4/tcp_synack_retries
#
# Bump up tw_buckets in case we get DoS'd
echo "16384" > /proc/sys/net/ipv4/tcp_max_tw_buckets
#
# Ignore pings
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
#
# Don't reply to broadcasts (prevents joining a smurf attack)
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
#
# Enable bad error message protection (should be enabled by default)
echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
#
# Don't cache connection metrics from previous connection
echo "1" > /proc/sys/net/ipv4/tcp_no_metrics_save
#
echo "15" > /proc/sys/net/ipv4/tcp_fin_timeout
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes
echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time
#
# Don't pass traffic between networks or act as a router
# Disable IP Packet forwarding (should be disabled already)
echo "0" > /proc/sys/net/ipv4/ip_forward
#
echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects
#
# Enable spoofing protection (turn on reverse packet filtering)
echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
echo "1" > /proc/sys/net/ipv4/conf/default/rp_filter
#
# Don't accept source routing
echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
echo "0" > /proc/sys/net/ipv4/conf/default/accept_source_route
#
# Don't accept redirects
echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/all/secure_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/secure_redirects
* Power saving tweaks
pm.sleep_mode 1
ro.ril.disable.power.collapse 1
wifi.supplicant_scan_interval 180
CREDITS
* My family !!
* Samsung
* XDA
* wanam repo, ezykernel ICS diff, Ryuinferno, CM, boeffla, GM, redpill more to add yet
* Chainfire for root
* GM - siyah kernel
* AndreiLux
* dorimanx
* Christopher83
* zeppelinrox - V6SuperCharger - KAK - 3G TurboCharger values and Fix Emissions script
* idcrisis for permission to implement CrossBreeder entropy into kernel - no success as yet...
* pikachu01 FOR SOME tHUNDERBOLT TWEAKS
* Suxsem for fstrim
* XDA devs that I cherry pick code, values & ideas from. The list is never ending...
* edan1979 for excellent feedback & also nutley for volunteering to test
GPL COMPLIANT - SOURCE: >> GitHub
.

Download & change-log
DOWNLOAD & CHANGE-LOG
** DISCLAIMER : FLASH AT YOUR OWN RISK **
WARNING :
* Under-volting can cause instability
* Over-clocking can cause freeze/reboot, heat & damage to CPU, GPU or other hardware
* Any customizations may void warranty
P6800 GSM/3G JB 4.1.2 DXMD3 ONLY
INSTALLATION
** DO NOT USE ANY 3RD PARTY TWEAKS OR “PERFORMANCE” TYPE APPS & REMOVE ALL ROM /KERNEL SCRIPTS FROM /system/etc/init.d FOLDER **
1. NANDROID (just in case)
2. Have installed any P6800 JB 4.1.2 ROM based from official Samsung sources
3. Remove any previous CPU control settings from starting at boot, remove any 3rd party tweaks etc
4. Flash in custom recovery (CWM or TWRP) to auto wipe previous kernel profile remnants ie. crontab. logs & /data/.siyah folder
5. If requested by Recovery to install SU, DO NOT. Instead - Let the kernel do it on boot
SkyHigh Kernel : Latest release is v5.0.0 FINAL ExTweaks Edition
CWM.zip v5.0.0 FINAL http://d-h.st/n3S
Archive : Working CWM Official Released Legacy Versions (UNSUPPORTED)
v0.7
v1.0.3
v2.0.8
v2.1.0
v2.2.0
v2.7.0
v2.8.0
v3.2.0
v3.3.0
v3.4.2
v3.5.0
v3.6.0
v3.7.0
v3.8.0
v3.9.1
v4.0.0
v4.1.0
v4.2.0 - Stable for some users (4-step GPU control)
v4.3.0
v4.4.0
v4.6.0
v4.6.1
v4.7.0b
v4.8.0b
v4.9.0b
-------------------------------------------------------------------
Stock Kernel :
CWM.zip DXMD3 http://d-h.st/tKE
ODIN.tar DXMD3 http://d-h.st/yxr
++ PLEASE DO NOT REDISTRIBUTE - LINK HERE INSTEAD ++
BUGS
* Check if it is actually a stock firmware bug first using stock kernel -BEFORE- posting in this thread or elsewhere
1. Random screen tint reported on both stock & SkyHigh kernels using CPU control app (Read Post #3)
2. Screen OFF reboot with ONLY SkyHigh DEFAULT kernel settings ( no "performance" type apps, scripts etc) Please read ISSUES section for help or flash v4.2.0 for stabilty
.
.

FAQ & HELP
FAQ & HELP
MY RECOMMENDATIONS
* Governor = pegasusq, lulzactiveq, or ZZMoove
* IMO = Performance → → Battery
1. on-demand
2. pegasusq (snappy, but easier on battery than on-demand)
3. lulzactiveq
4. ZZMoove​
* Scheduler = SIO
* CPU freq = 200-1400/1600 MHz
* CPU vdd levels = SkyHigh "defaults"
* Enable zRAM for better mulitasking
* CPU Control app = ExTWeaks
Don't forget to use only one Control app at a time. They will conflict !
ISSUES?
1 Remove any kernel related init.d tweaks, 3rd party performance type apps etc
2 Wipe your CPU control app(s) data (menu > settings > applications > "your control app(s)" > clear data/cache)
3 Use only ONE CPU control app ! USE EXTweaks
4 Open SuperSU app > settings > full unroot (or unroot from with EXTweaks options)
5 Boot into recovery and wipe cache & dalvik cache
6 Re-flash SkyHigh Kernel
7 If requested by recovery - DO NOT install root (let the kernel do it)
9 Reboot
8 If still issue such as bootloop etc, try using MPLL mode for GPU, and or increase GPU voltages +50 mV
9 Try a kernel "legacy" versions
10 Back to stock for you
RANDOM SCREEN TINT AFTER CHANGING GOVERNOR
* Turn screen OFF-ON
* Use only SkyHigh defaults values
* Don't use a CPU control app to change kernel settings - Use init.d script instead
* OR IF IT BOTHERS YOU,...... DON'T USE THE KERNEL
zRAM
Info here : (INFO)What is zram and how does it work???
LOGS
* You can find various ExTweaks logs in the /data folder:
/data/.siyah
/data/extSdCard_fix.log
/data/fsrepair.log
/data/fstrim_lagfix.log
/data/Ran_FixEmissions.log
/data/sqlite.log
/data/zipalign.db
/data/zipalign.log
/data/crontab
PREVENT/REDUCE SCREEN-OFF FLICKER FOR CRT-OFF ANIMATION ENABLED ROMs
* Set fbearlysuspend msleep between 100 and 500 ms
* Set to 0 if you haven't any CRT-off animation mod
DYNAMIC MANAGEMENT OF DIRTY PAGE WRITEBACKS
* [Christopher83]
This feature allows to have two different intervals for dirty page
writebacks and to dynamically manage them when the system has been
resumed (it's active) or when has been suspended.
Three new procfs parameters are exposed inside /proc/sys/vm path:
- dynamic_dirty_writeback is the activation status of this feature,
set 1 to enable it, set 0 to disable it and use the standard behaviour
- dirty_writeback_active_centisecs is the interval for the dirty page
writebacks when the system is active (screen on)
- dirty_writeback_suspend_centisecs is the interval for the dirty page
writebacks when the system is suspended (screen off)
This feature is in part inspired on Francisco Franco's patch:
https://github.com/franciscofranco/mako/commit/34d79548cf16b69c7d0154836018e7f258a22947
Click to expand...
Click to collapse
WHAT IS A CUSTOM KERNEL
* First of all, watch this : Android Basics 101: Understanding Kernels – XDA Developer TV
* Is usually' modified and complied from source.
* My very first successfully compiled kernel just included the "SkyHigh" name. I suppose you could call that a modified "stock" kernel. On the other hand, you could also argue that any firmware modified from either official or built from sources could be called "custom".
HAVE THE STOCK KERNELS ATTACHED BEEN MODIFIED
* If you are referring to the stock MD3 kernels in Post #2, NO
* I just extracted the zImage from official firmware and repackaged for flashing via custom recovery or Odin. There are no changes made to the zImage. I have no plans to modify these.
ENTROPY
* MAX pool sixe 4096
* It's not instant, just use your device and it will grow.
* No need for entropy generator apps that consume battery (use extra CPU cycles)
WHAT ARE GOVERNORS / SCHEDULERS ETC
* Excellent source of info by droidphile :
[REF][TWEAKS] Kernel Governors, Modules, I/O Schedulers, CPU Tweaks, AIO App Configs
FSTRIM LAGFIX
* fstrim is more of a maintenance binary. Android 4.2.2 and below are more prone to lag over time and prevalent as your internal storage is used up.
* Trims system, preload, data & cache partitions
* fstrim binary set to run by init.d 90lagfix script after boot to reduce impact on boot time
* A manual reboot once a week is suggested. Those users who have ample internal storage and or recently formatted their partitions via ROM flash or Nandroid restore may see little difference for now.
* More info : Google yourself or Nexus Storage Performance Over Time & TRIM 20130829
CUSTOM BOOT ANIMATION SUPPORT
1. copy bootanimation.zip to /system/media/ folder (mount folder r/w to paste)
2. ensure set permissions rw-rw-rw-
3. reboot
NOTE :
* For any further help or instructions for bootanimation, please open your own forum Q&A thread or post in a relevant bootanimation thread. There are many already built and can be found by searching.
* The size we need for our tab is 800x1280 or 1280x800 (depending on portrait or landscape)
CUSTOM BOOT SOUND SUPPORT
* Place custom boot sound PowerOn.ogg in /system/media
* To mute, create an empty file named mute in /system/media
* To unmute, create an empty file named unmute in /system/media
* To restore original boot sound, create an empty file named ori_sound in /system/media
* Reboot device after each process
NOTE :
* when creating a custom boot sound, make sure you use a capital "P" and "O" in PowerOn.ogg
* I will not provide a tutorial for creating boot sounds, you can Google yourself
BENCH-MARKING
Freeze or Re-Boot
1 Try increase CPU 1600 Mhz voltage by +25 mV or +50 mV. I would not recommend any more than that !
2 Lower CPU OC back to stock max 1400 MHz setting
3 To find out which frequency cause the freeze :
a) If you have UV the CPU and the device freeze, obviously you need to increase the voltage to a particular frequency step(s)
b) Do a stress test with SetCPU (or other app) and lock your max frequency for each step (DO NOT SET ON BOOT WHILST TESTING)
4 Try a different governor
5 Use a different benchmark app/tool
AnTuTu Crashes?
* Try another benchmark app !
Low Bench-Marking Scores
* Consectutive tests as well as OC may heat the CPU high enough where thermal limiting occurs. Well here you go........... I observed my CPU regularly drop to 800 MHz after hitting a thermal limit during testing.
Here's the proof !
https://github.com/UpInTheAir/P6800_JB_SkyHigh_Kernel/blob/master/arch/arm/mach-exynos/mach-px.c
Code:
#ifdef CONFIG_EXYNOS4_SETUP_THERMAL
/* below temperature base on the celcius degree */
struct s5p_platform_tmu px_tmu_data __initdata = {
.ts = {
[COLOR="Red"].stop_1st_throttle = 61,
.start_1st_throttle = 64,[/COLOR]
.stop_2nd_throttle = 87,
.start_2nd_throttle = 103,
.start_tripping = 110,
.start_emergency = 120,
.stop_mem_throttle = 80,
.start_mem_throttle = 85,
},
.cpufreq = {
.limit_1st_throttle = [COLOR="Red"]800000[/COLOR], /* 800MHz in KHz order */
.limit_2nd_throttle = 200000, /* 200MHz in KHz order */
* With some undervolt and governor tuning, little OC impact will be felt on battery. Not everyone fixes their CPU to max with performance governor so, providing your hardware can handle it, some OC should be OK for everyday use as the CPU only briefly scales to max freq with the 'right' governor.
* As you can see, this could be easily changed to allow (cheat) in benchmarks. This won't make much difference to everyday use, but IMO shouldn't be touched. My silicon may not handle it
RESET CUSTOM FLASH COUNTER
*There is a Samsung Galaxy Tab 7.7 flash counter introduced for P6800 JB 4.1.2 DXMD3, so any modified ROM, kernel or recovery flashed via PC Odin will increase the counter.
1. Have installed my P6810/P6800 SkyHigh kernel for JB 4.1.2 (patched for triangle away compatibility)
2. Install triangle away app v3.26
3. Reset counter
4. Reboot as requested
5. To check > open app again, or, power off and enter download mode
* Your custom ROM, kernel, recovery & root remain intact
Anything else, IF I find the time
.

UpInTheAir said:
I am UpInTheAir and Chef of SGT 7.7 ICS ROMs, and now bring to you my P6800 Jellybean SkyHigh Kernel.
** FOR P6800 GSM/3G device running JB 4.1.2 DXMD3 ONLY !! **
-- STABLE WORK-IN-PROGRESS --
* I am NOT a recognised developer, and don't actually use the P6800, but thought I would help out this forum by trying to develop a P6800 JB kernel.
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching XDA and Google
FEATURES
* Based on official Samsung source MD3
* Default CPU max 1400 MHz
* OC to max 1600 MHz (support with CPU control app)
* CPU voltage control interface (UV support with a CPU control app)
* Enabled pegasus governor
* NTFS filesystem support
* Support paging of anonymous memory (Swap)
* General optimized for size
* Kernel compression = Gzip
* Default governor = on-demand
* Default IO scheduler = CFQ
* STABLE
TO DO
* Add more governors and IO schedulers
* UV GPU
* OC GPU
* UV screen
* Frandom support
* Other various useful modules
* Auto root
* init.d support
* STweaks support
* Increase AC & USB charge rate
* Custom bootanimation support
* Lots more
CREDITS
* Samsung
* XDA
* wanam repo, ezykernel ICS diff, more to add yet
* edan1979 for excellent feedback & also nutley for volunteering to test
* Development has been slow, but still progressing.......
* Things will speed up (time permitting) once JB source is released for my P6810 model and I can test changes on my own device and subsequent mirror the development
* SOURCE: Still being uploaded to github, and commits will be reflected a soon as I'm home (currently away) and PC stops freezing. Please be patient on this.
DOWNLOAD & CHANGE-LOG in Post #2
FAQ & HELP in Post #3
.
Click to expand...
Click to collapse
Nice!
I was planning to do this for sometime but I'm stuck at other things. I have already prepared the config for 6810 and i815. If you have time, I can send you those files to build the kernel for p6810. Hoping it will help you creating a custom stock rom for p6810 before Samsung!
Thanks again for contribution to our community! :good:

daniel_hk said:
Nice!
I was planning to do it for sometime but I'm stuck at other things. I have already prepared the config for 6810 and i815. If you have time, I can send you those files to build the kernel for p6810. Hoping it will help you creating a custom stock rom for p6810 before Samsung!
Thanks again for contribution to our community! :good:
Click to expand...
Click to collapse
Sounds great. Thanks !
Much easier to build and test with device in hand, so hoping for the official P6810 JB update soon. Although appreciate what you bring to the community with JB, If Samsung haven't released it in the next month, probably sell the tab for the "next big thing", as long as it's 7 or 8 in...... My 9 yo boy wants the tab though, so things could still change
Sent from my GT-I9500 using xda premium

already flashed.
booting : ok
overclock to 1600: work
set pegasusq governor: work
will try to uv and report.
Sent from my GT-P6800 using Tapatalk HD

UpInTheAir said:
Sounds great. Thanks !
Much easier to build and test with device in hand, so hoping for the official P6810 JB update soon. Although appreciate what you bring to the community with JB, If Samsung haven't released it in the next month, probably sell the tab for the "next big thing", as long as it's 7 or 8 in...... My 9 yo boy wants the tab though, so things could still change
Sent from my GT-I9500 using xda premium
Click to expand...
Click to collapse
Already sent the link in PM. It should work with the latest JB source for 6800.
Good luck and let's hear more good news!
Edit: attached here View attachment p8-wifi_defconfig.tar.gz

daniel_hk said:
Already sent the link in PM. It should work with the latest JB source for 6800.
Good luck and let's hear more good news!
Edit: attached here View attachment 1979341
Click to expand...
Click to collapse
Got it.
Thanks.
I'll just keep chipping away at the development until I have to go away to work again,.... probably early next month.
Sent from my GT-I9500 using xda premium

My 9 yo boy wants the tab though, so things could still change
Click to expand...
Click to collapse
Seems to me that a Tab 7.7 is about perfect for a little boy.
Keep it in the family:good:

Thanks dev for your kind support for the tab!

anyone try this kernel on the erobot rom yet ?

golfinggino said:
anyone try this kernel on the erobot rom yet ?
Click to expand...
Click to collapse
yes its working fine...

Hi, move to see that our device is not given up by developers
One request: after moving to JB I noticed that the sound is much lower in JB. Is it possible to fix it?
Sent from my GT-P6800 using Tapatalk 2

200mpx said:
Hi, move to see that our device is not given up by developers
One request: after moving to JB I noticed that the sound is much lower in JB. Is it possible to fix it?
Sent from my GT-P6800 using Tapatalk 2
Click to expand...
Click to collapse
Probably a way. In the mean time, take a look at this thread for SGS4 and see if it's applicable to your device....
Maybe with just a few minor adjustments, you can tweak from within your own ROM. Worth a look.
http://forum.xda-developers.com/sho...Modifications for i9500 (i9505 incompatible)!
Sent from my GT-I9500 using xda premium

Hi, how about NTFS filesystem support? I put via OTG usb flash drive 32gb formated as NTFS and tab can't recognize drive.
ROM is eRobot v1.0 and kernel is SkyHigh Kernel v0.7. May be i don't make some settings?

partola1 said:
Hi, how about NTFS filesystem support? I put via OTG usb flash drive 32gb formated as NTFS and tab can't recognize drive.
ROM is eRobot v1.0 and kernel is SkyHigh Kernel v0.7. May be i don't make some settings?
Click to expand...
Click to collapse
Firstly, does it work with your external sdcard formatted as NTFS ?
Secondly, Try USB OTG Helper app from Google Play and see if you have any luck mounting the USB stick.
Third, does it work with the stock kernel? You haven't said as I requested in OP...
Sent from my GT-I9500 using xda premium

Source : GitHub
I am now complying with the GPL and have managed to make the source/changes available for everyone to see.
Took a while, but eventually managed to upload and commit to GitHub.
Link now in OP
Now back to developing............
Edit: having a few git issues......
Edit2: Have gitHub back and correct. Just learning the basics and now lost some dev time because of it............. off to bed, always tomorrow
.

my uv setting
erobot rom
Sent from my GT-P6800 using Tapatalk HD

theerachai said:
my uv setting
erobot rom
Sent from my GT-P6800 using Tapatalk HD
Click to expand...
Click to collapse
Sweet !
Have you stress test each step to ensure stability?
You will need to lock the max frequency to that of each step, make sure it is NOT "set on boot" (during testing), so you can recover easily if device freeze or reboot occurs.

As a previous user didn't bother to give any further feedback on the NTFS, could someone using this kernel please check this:
1. Run Android Terminal Emulator app
2. su
3. Allow Superuser permission
4. lsmod
( the "l" is a lower case "L" )
What do you have? Please post a screenshot.
Also, check system/lib/modules for ntfs.ko
Cheers
Sent from my GT-I9500 using xda premium

[KERNEL] [P6810 JB 4.1.2] [22 Mar] ROOT | ExTweaks | exFAT | SkyHigh Kernel [3.0.0]

[KERNEL] [P6810 JB 4.1.2] [22 Mar] ROOT | ExTweaks | exFAT | SkyHigh Kernel [3.0.0 FINAL]
** ONLY FOR P6810 Wi-Fi device running:
1. bodivas JB 4.1.2 DXMD3 ROM Port
-or-
2. [ROM] 24 Dec [Aroma] [P6810 / P6800] Multi-Language & Multi-Window JB 4.1.2 | SkyHigh [v3.5]
I am UpInTheAir part time kernel dev (hack) and Chef of SGT 7.7 JB & ICS ROMs, and now bring to you my P6810 Jellybean SkyHigh Kernel.
-- STABLE FINAL RELEASE --
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching gitHub, XDA and SEARCH
FEATURES
* Based on official Samsung source JB DXMD3
* AUTO ROOT (only if you don't already have it)
insecure kernel
su binary 1.91
SuperSU 1.91
busyBox 1.20.2 linusyang installed to system/sbin​
* STABLE - under SkyHigh "default" values & conditions
* ExTweaks app support for almost all kernel configurations + more !!
Many descriptions are in the app ! If you require more info, don't be lazy, please SEARCH like I did !
CPU
Boot boost CPU freq
Boost CPU freq (not fully tested)
Cortex wakeup boost (not fully tested)
Max normal freq
CPU freq OC / UC
CFS settings – Arch power
CPU idle mode (sleep & awake)
Scaling max suspend freq
Scaling min suspend freq
Scaling min standby freq
CPU temp throttle
CPU VOLTAGE
Set voltage individually for each 18-step freq
CPU TUNING (Awake & Sleep)
Set default CPU governor
Set governor configuration
Enable/disable hotplug
BUS
Bus voltage group
Thresholds
IO Tuning
Int/ext sdcard read-ahead cache
Dynamic Fsync control
Dynamic dirty page writeback control
IO scheduler (awake & sleep)
MEMORY TUNING
OOM control (screen on/off)
Dirty background ratio
Dirty ratio
Clean RAM cache
zRAM
Swappiness
zRAM stats
KSM control
GPU CONTROL
VPLL/MPLL mode
Freq control
Voltage control
Threshold control
Stay-count control
DISPLAY
FB early suspend delay (CRT TV off animation for SUPPORTED ROM)
Touch screen sensitivity
SOUND
Master volume gain
Headphone
Mic
Speaker
TWEAKS
- CortexBrain-Background-Process control
- Check CortexBrain-Background-Process Service
TCP security
TCP speed
TCP RAM
IPV6 (enabled by default - does not actually switch off)
CPU
Memory
System
Kernel
IO
OTHER
- Cron Task Control
- Test Cron task service
- Cron reset
Clean RAM cache task every hour
Update AD blocker task every week
DB optimizing (sqlite3) task every day
Clean app cache task every day
Zipalign task every day
fstrim lagfix task every day
Cron test task jobs
Zipalign apps now
Zipalign on boot
DB optimization (sqlite3) now
DB optimization (sqlite3) on boot
Battery scaling calibration (fuel-gauge reset) now
Ad blocker update now
Remove Ad blocker
FILE SYSTEM MAINTENANCE / REPAIR
Partitions scan
Data FS repair on boot
extSdCard repair on boot
Fix permissions on boot
Fix permissions now
Trim FS partitions (fstrim lagfix) on boot
Trim FS partitions (fstrim lagfix) now
INIT.D SUPPORT
Enable init.d script run control
USB MASS STORAGE (UMS) MODE
MTP Mass storage mode
WIFI & GPS
Clean WIFI lease
TCP congestion control
GPS region
GPS zone check
Update time
ROOT
Install root now
Remove root now
Root check
Auto install root on boot
MODULES
Frandom control
XPAD control
ISO CD-ROM control
UDF CD-ROM/DVD control
PROFILES
Profile check
UpInTheAir & SkyHigh Default (you can configure & save values for each, but not change the actual profile name)
BACKUP & RESTORE
Backup User settings now
Restore User settings now
RE-BOOT
Re-boot into Recovery
BUG-REPORT
Kernel bug-report
App bug-report
Android logger control
Kernel printk control
Module logger control
INFO
* SkyHigh default CPU min/max 200 > 1400 MHz (13-step)
* 18-step CPU 100 > 1800 MHz (Recommend setting 200-1400/1600 MHz)
Default = 13-step 200 > 1400 MHz
Stock = 6-step 200 > 1400 MHz​
* No UV for stock frequencies 200-500-800-1000-1200-1400 MHz
* 4-step GPU : Default = 160-200-267-400 MHz
MPLL mode = 4-step GPU (default)
Stock = 2-step GPU (160-267 MHz)
Min freq = 50 MHz
Max MPLL freq = 400 MHz
Max VPLL freq = 520 MHz
Voltage = 800 > 1200 mV (+/- 50 mV increments)​
* GPU UV / UC / OC
160 MHz = 950 mV (-50 mV > stock 1000 mV)
200 MHz = 1000 mv
267 MHz = 1050 mV (-50 mV > stock 1100 mV)
400 MHz = 1100 mV​
* GPU Control
freq clock
voltage
step thresholds
stay counts​
GPU BENCHMARK BEFORE (3DMark app)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
GPU BENCHMARK AFTER @ 400 MHz (3DMark app)
* GPU VPLL mode optional
For devices that can't handle VPLL – use MPLL mode instead
http://forum.xda-developers.com/showpost.php?p=33720501&postcount=4181&nocache=1&z=1048045007703282
* Busfreq up & down threshold control
Stock / SkyHigh default = 23
* Busfreq (memory) voltage group
default group = 1 (stock)
available group options 1 > 7
L0 = 400 L1 = 267 L2 = 160 MHz
1 > {1150000, 1050000, 1050000} SkyHigh default / stock
2 > {1125000, 1025000, 1025000}
3 > {1100000, 1000000, 1000000}
4 > {1075000, 975000, 975000}
5 > {1050000, 950000, 950000}
6 > {1025000, 950000, 925000}
7 > {1000000, 925000, 900000}
* Set L2 bus (memory) speed from 133 > 160 MHz
- Default MHz now:
L0 = 400
L1 = 267
L2 = 160 MHz / 1000 mV (stock = 133 MHz / 950 mV)
* Adaptive vfs_cache_pressure on suspend / resume
Hard coded values :
- Set @ 10 = save battery on device suspend
- Set @ 60 = better smoothness on device resume
Low vfs_cache pressure values save battery while idle, while a low value also causes stutter with longer up times.
* Governors
pegasusq = SkyHigh default (siyah kernel version & "freq for responsiveness" tweaked to 500 MHz by me)
HYPER
scary
wheatley
abyssplug
lulzactiveq (siyah kernel version & tweaked by me)
lazy
hotplug
ondemand
performance
ZZMoove 0.7d​
* IO schedulers
SIO = SkyHigh default
ROW
VR
NOOP
Deadline
CFQ​
* SOUND CONTROL via ExTweaks app
* Thunderbolt scheduler IO Tweaks [pikachu01]
* Implemented kernel to report USB trickle charge (previously just reports discharging).
- Those devices without modified SystemUI.apk will now show battery charging animation whilst on USB power source
* Force USB charging source to be detected as AC
- faster USB charge using same circuitry
- limited by:
1. charging source max output
2. kernel - up to max 1500 mA (same is actual AC)​
* Auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot
* Reduced GUI lag
- Frandom
- fstrim lagfix - NOT ENABLED BY DEFAULT
- Disabled gentle fair sleepers
- RAM management OOM adj & minfree values from V6SuperCharger​
* Improved touch-screen sensitivity (on both battery and charge)
* Mount partitions NOATIME and NODIRATIME by default
* R/W and auto-mounting of exFAT USB-OTG & external sdcard using official Samsung Open Source modules v1.2.5
* modded ROM /system/etc/vold.fstab to permit exFAT mounting
* NTFS R/W OTG file system support (require app to mount)
* UDF/ISO file system support - BluRay (require app to mount) - not tested !
* Network filesystem support
In-built CIFS
In-built NFS (not tested)​
* TCP algorithms
- cubic = default
- reno
- westwood+ (some users of other devices have reported faster network throughput speeds)​
* In-built zRAM support
* LZ4 compression implemented & enabled for zRAM [psndna88 & Yank555.lu]
* Support paging of anonymous memory (Swap)
* General optimized for size
* Kernel compression = xz
* Support for iPad, iPhone, iPhone_3G/S, iPhone_4/4S, iPhone_5 (not tested as I don't own "rotten fruit" )
* UV motor -100 mV (3.1V → 3.0V)
* UV LED -100 mV (3.2V → 3.1V)
* fbearlysuspend control - allow CRT-off animation in SUPPORTED ROMs)
* Thermal throttle control (default on) – be careful here, do you want to melt your CPU?
* Dynamic read-ahead implemented and set at 1024 KB (variable)
* Int/External sdcard read ahead cache = variable KB
* Internal & external sdcard IO schedulers = SIO
* Dynamic FSync control v1.2 implemented and enabled
* Dynamic management of dirty page writebacks
* Android Logger Control disabled
* Linux printk Control disabled
* KSM support
* Custom bootanimation support
* Custom boot sound support
* Support for XPAD gamepad & rumblepad controller
* Reduce Android logger RAM usage
* Disabled kernel debugging to reduce zImage size
* Disabled some module logging
* Disable mali tracking debug
* Disable zRAM debug
* Disable modem in config (not needed for this device)
* Triangle Away app support
* vm swappiness = 20 (performance)
* Free pagecache. dentries and inodes will be managed by /proc/sys/vm/vfs_cache_pressure
echo "1" > /proc/sys/vm/drop_caches
* System property accessory tweak values from V6SuperCharger
dalvik.vm.heapgrowthlimit 130m
dalvik.vm.heapsize 130m
persist.sys.purgeable_assets 1
windowsmgr.max_events_per_sec 90 (200 set as SkyHigh default)
* Virtual memory & kernel tweak
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
echo "10" > /proc/sys/fs/lease-break-time
echo "0" > /proc/sys/kernel/panic
echo "0" > /proc/sys/kernel/panic_on_oops
echo "0" > /proc/sys/vm/block_dump
echo "60" > /proc/sys/vm/dirty_background_ratio
echo "95" > /proc/sys/vm/dirty_ratio
echo "0" > /proc/sys/vm/laptop_mode
echo "15360" > /proc/sys/vm/min_free_kbytes
echo "4" > /proc/sys/vm/min_free_order_shift
echo "0" > /proc/sys/vm/oom_dump_tasks
echo "0" > /proc/sys/vm/oom_kill_allocating_task
echo "1" > /proc/sys/vm/overcommit_memory
echo "0" > /proc/sys/vm/panic_on_oom
#echo "20" > /proc/sys/vm/swappiness ########### Already implemented
#echo "10" > /proc/sys/vm/vfs_cache_pressure ########### Implemented adaptive vfs_cache_pressure on suspend (10) / resume (60)
* Misc tweaks for battery life
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
echo "65536" > /proc/sys/kernel/msgmax
echo "2048" > /proc/sys/kernel/msgmni
echo "500 512000 64 2048" > /proc/sys/kernel/sem
echo "2097152" > /proc/sys/kernel/shmall
echo "268435456" > /proc/sys/kernel/shmmax
echo "4096" > /proc/sys/kernel/shmmni
#
echo "524288" > /proc/sys/fs/file-max
echo "32000" > /proc/sys/fs/inotify/max_queued_events
echo "256" > /proc/sys/fs/inotify/max_user_instances
echo "10240" > /proc/sys/fs/inotify/max_user_watches
echo "0" > /proc/sys/kernel/sched_child_runs_first
echo "524288" > /proc/sys/kernel/threads-max
* TCP Speed & Security
# values from V6SuperCharger & Kick Ass Kernelizer [[email protected]]
# 3G TurboCharger Enhancement
#
# Google's public DNS settings
#
/system/bin/setprop net.dns1 8.8.8.8 ########### Not sticking
/system/bin/setprop net.dns2 8.8.4.4
#
# ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax
/system/bin/setprop net.tcp.buffersize.default 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.wifi 262144,524288,1048576,262144,524288,1048576
/system/bin/setprop net.tcp.buffersize.lte 262144,524288,3145728,262144,524288,3145728
/system/bin/setprop net.tcp.buffersize.hsdpa 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.evdo_b 6144,262144,1048576,6144,262144,1048576
/system/bin/setprop net.tcp.buffersize.umts 6144,87380,110208,6144,16384,110208
/system/bin/setprop net.tcp.buffersize.hspa 6144,87380,262144,6144,16384,262144
/system/bin/setprop net.tcp.buffersize.gprs 6144,8760,11680,6144,8760,11680
/system/bin/setprop net.tcp.buffersize.edge 6144,26280,35040,6144,16384,35040
#
# Queue size modifications
echo "20480" > /proc/sys/net/core/optmem_max
#echo "262144" > /proc/sys/net/core/rmem_default
echo "1048576" > /proc/sys/net/core/rmem_max
#echo "262144" > /proc/sys/net/core/wmem_default
echo "1048576" > /proc/sys/net/core/wmem_max
echo "50" > /proc/sys/net/unix/max_dgram_qlen
#
# Be sure that autotuning is in effect
echo "1" > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
#
echo "0" > /proc/sys/net/ipv4/ip_no_pmtu_disc
echo "1" > /proc/sys/net/ipv4/route/flush
echo "0" > /proc/sys/net/ipv4/tcp_ecn
echo "1" > /proc/sys/net/ipv4/tcp_fack
echo "1" > /proc/sys/net/ipv4/tcp_rfc1337
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_rmem ########### Not sticking
echo "1" > /proc/sys/net/ipv4/tcp_sack
echo "0" > /proc/sys/net/ipv4/tcp_timestamps
echo "1" > /proc/sys/net/ipv4/tcp_window_scaling
#echo "6144 87380 1048576" > /proc/sys/net/ipv4/tcp_wmem ########### Not sticking
echo "6144" > /proc/sys/net/ipv4/udp_rmem_min
echo "6144" > /proc/sys/net/ipv4/udp_wmem_min
#
# Re-use sockets in time-wait state
echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
#
# Hardening the TCP/IP stack to SYN attacks
echo "1024" > /proc/sys/net/ipv4/tcp_max_syn_backlog
echo "2" > /proc/sys/net/ipv4/tcp_syn_retries
echo "2" > /proc/sys/net/ipv4/tcp_synack_retries
#
# Bump up tw_buckets in case we get DoS'd
echo "16384" > /proc/sys/net/ipv4/tcp_max_tw_buckets
#
# Ignore pings
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
#
# Don't reply to broadcasts (prevents joining a smurf attack)
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
#
# Enable bad error message protection (should be enabled by default)
echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
#
# Don't cache connection metrics from previous connection
echo "1" > /proc/sys/net/ipv4/tcp_no_metrics_save
#
echo "15" > /proc/sys/net/ipv4/tcp_fin_timeout
echo "30" > /proc/sys/net/ipv4/tcp_keepalive_intvl
echo "5" > /proc/sys/net/ipv4/tcp_keepalive_probes
echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time
#
# Don't pass traffic between networks or act as a router
# Disable IP Packet forwarding (should be disabled already)
echo "0" > /proc/sys/net/ipv4/ip_forward
#
echo "0" > /proc/sys/net/ipv4/conf/all/send_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/send_redirects
#
# Enable spoofing protection (turn on reverse packet filtering)
echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
echo "1" > /proc/sys/net/ipv4/conf/default/rp_filter
#
# Don't accept source routing
echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
echo "0" > /proc/sys/net/ipv4/conf/default/accept_source_route
#
# Don't accept redirects
echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/all/secure_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/accept_redirects
echo "0" > /proc/sys/net/ipv4/conf/default/secure_redirects
* Power saving tweaks
pm.sleep_mode 1
ro.ril.disable.power.collapse 1
wifi.supplicant_scan_interval 180
CREDITS
* My family !!
* Samsung
* XDA
* wanam repo, ezykernel ICS diff, Ryuinferno, CM, boeffla, GM, redpill more to add yet
* Chainfire for root
* GM - siyah kernel
* AndreiLux
* dorimanx
* Christopher83
* zeppelinrox - V6SuperCharger - KAK - 3G TurboCharger values and Fix Emissions script
* idcrisis for permission to implement CrossBreeder entropy into kernel - no success as yet...
* pikachu01 FOR SOME tHUNDERBOLT TWEAKS
* Suxsem for fstrim
* XDA devs that I cherry pick code, values & ideas from. The list is never ending...
* edan1979 for excellent feedback & also nutley for volunteering to test
GPL COMPLIANT - SOURCE: >> GitHub
.

Download & change-log
DOWNLOAD & CHANGE-LOG
** DISCLAIMER : FLASH AT YOUR OWN RISK **
WARNING :
* Under-volting can cause instability
* Over-clocking can cause freeze/reboot, heat & damage to CPU
* Any customizations may void warranty
P6810 Wi-Fi JB 4.1.2 DXMD3 ONLY
INSTALLATION
** DO NOT USE ANY 3RD PARTY TWEAKS OR “PERFORMANCE” TYPE APPS & REMOVE ALL ROM / KERNEL SCRIPTS FROM /system/etc/init.d FOLDER **
1. NANDROID (just in case)
2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM
3. Remove any previous CPU control settings from starting at boot, remove any 3rd party tweaks etc
4. Flash in custom recovery (CWM or TWRP) to auto wipe previous kernel profile remnants ie. crontab & /data/.siyah folder
5. If requested by Recovery to install SU, DO NOT. Instead - Let the kernel do it on boot
P6810 Wi-Fi SkyHigh Kernel : Latest release is v3.0.0 FINAL Edition
CWM.zip v3.0.0 FINAL http://d-h.st/oVe
Archive : Working CWM Official Released Legacy Versions (UNSUPPORTED)
v2.6.0b
v2.5.0b
v2.4.0b
v2.3.0
v2.1.0
v2.0.0
v1.9.0
v1.8.0
v1.7.0
v1.6.0
v1.5.0
v1.0.0
-------------------------------------------------------------------
Stock repack kernel (thanks bodivas) :
CWM.zip DXMD3
ODIN.tar DXMD3
++ PLEASE DO NOT REDISTRIBUTE - LINK HERE INSTEAD ++
BUGS
* Check if it is actually a stock firmware bug first using stock kernel -BEFORE- posting in this thread or elsewhere
1. Random screen tint reported on both stock & SkyHigh kernels using CPU control app (Read Post #3)
.
.

FAQ & HELP
FAQ & HELP
MY RECOMMENDATIONS
* Governor = pegasusq, lulzactiveq, or ZZMoove
* IMO = Performance → → Battery
1. on-demand
2. pegasusq (snappy, but easier on battery than on-demand)
3. lulzactiveq
4. ZZMoove​
* Scheduler = SIO
* CPU freq = 200-1400/1600 MHz
* CPU vdd levels = SkyHigh "defaults"
* Enable zRAM for better mulitasking
* CPU Control app = ExTWeaks
Don't forget to use only one Control app at a time. They will conflict !
ISSUES?
1 Remove any kernel related init.d tweaks, 3rd party performance type apps etc
2 Wipe your CPU control app(s) data (menu > settings > applications > "your control app(s)" > clear data/cache)
3 Use only ONE CPU control app ! USE EXTweaks
4 Open SuperSU app > settings > full unroot (or unroot from with EXTweaks options)
5 Boot into recovery and wipe cache & dalvik cache
6 Re-flash SkyHigh Kernel
7 If requested by recovery - DO NOT install root (let the kernel do it)
9 Reboot
8 If still issue such as bootloop etc, try using MPLL mode for GPU, and or increase GPU voltages +50 mV
9 Try a kernel "legacy" versions
10 Back to stock for you
RANDOM SCREEN TINT AFTER CHANGING GOVERNOR
* Turn screen OFF-ON
* Use only SkyHigh defaults values
* Don't use a CPU control app to change kernel settings - Use init.d script instead
* OR IF IT BOTHERS YOU,...... DON'T USE THE KERNEL
zRAM
Info here : (INFO)What is zram and how does it work???
LOGS
* You can find various ExTweaks logs in the /data folder:
/data/.siyah
/data/extSdCard_fix.log
/data/fsrepair.log
/data/fstrim_lagfix.log
/data/Ran_FixEmissions.log
/data/sqlite.log
/data/zipalign.db
/data/zipalign.log
/data/crontab
PREVENT/REDUCE SCREEN-OFF FLICKER FOR CRT-OFF ANIMATION ENABLED ROMs
* Set fbearlysuspend msleep between 100 and 500 ms
* Set to 0 if you haven't any CRT-off animation mod
DYNAMIC MANAGEMENT OF DIRTY PAGE WRITEBACKS
* [Christopher83]
This feature allows to have two different intervals for dirty page
writebacks and to dynamically manage them when the system has been
resumed (it's active) or when has been suspended.
Three new procfs parameters are exposed inside /proc/sys/vm path:
- dynamic_dirty_writeback is the activation status of this feature,
set 1 to enable it, set 0 to disable it and use the standard behaviour
- dirty_writeback_active_centisecs is the interval for the dirty page
writebacks when the system is active (screen on)
- dirty_writeback_suspend_centisecs is the interval for the dirty page
writebacks when the system is suspended (screen off)
This feature is in part inspired on Francisco Franco's patch:
https://github.com/franciscofranco/mako/commit/34d79548cf16b69c7d0154836018e7f258a22947
Click to expand...
Click to collapse
WHAT IS A CUSTOM KERNEL
* First of all, watch this : Android Basics 101: Understanding Kernels – XDA Developer TV
* Is usually' modified and complied from source.
* My very first successfully compiled kernel just included the "SkyHigh" name. I suppose you could call that a modified "stock" kernel. On the other hand, you could also argue that any firmware modified from either official or built from sources could be called "custom".
HAVE THE STOCK KERNELS ATTACHED BEEN MODIFIED
* If you are referring to the stock MD3 kernels in Post #2, NO
* I just extracted the zImage from official firmware and repackaged for flashing via custom recovery or Odin. There are no changes made to the zImage. I have no plans to modify these.
ENTROPY
* MAX pool sixe 4096
* It's not instant, just use your device and it will grow.
* No need for entropy generator apps that consume battery (use extra CPU cycles)
WHAT ARE GOVERNORS / SCHEDULERS ETC
* Excellent source of info by droidphile :
[REF][TWEAKS] Kernel Governors, Modules, I/O Schedulers, CPU Tweaks, AIO App Configs
FSTRIM LAGFIX
* fstrim is more of a maintenance binary. Android 4.2.2 and below are more prone to lag over time and prevalent as your internal storage is used up.
* Trims system, preload, data & cache partitions
* fstrim binary set to run after boot
* A manual reboot once a week is suggested. Those users who have ample internal storage and or recently formatted their partitions via ROM flash or Nandroid restore may see little difference for now.
* More info : Google yourself or Nexus Storage Performance Over Time & TRIM 20130829
CUSTOM BOOT ANIMATION SUPPORT
1. copy bootanimation.zip to /system/media/ folder (mount folder r/w to paste)
2. ensure set permissions rw-rw-rw-
3. reboot
NOTE :
* For any further help or instructions for bootanimation, please open your own forum Q&A thread or post in a relevant bootanimation thread. There are many already built and can be found by searching.
* The size we need for our tab is 800x1280 or 1280x800 (depending on portrait or landscape)
CUSTOM BOOT SOUND SUPPORT
* Place custom boot sound PowerOn.ogg in /system/media
* To mute, create an empty file named mute in /system/media
* To unmute, create an empty file named unmute in /system/media
* To restore original boot sound, create an empty file named ori_sound in /system/media
* Reboot device after each process
NOTE :
* when creating a custom boot sound, make sure you use a capital "P" and "O" in PowerOn.ogg
* I will not provide a tutorial for creating boot sounds, you can Google yourself
BENCH-MARKING
Freeze or Re-Boot
1 Try increase CPU 1600 Mhz voltage by +25 mV or +50 mV. I would not recommend any more than that !
2 Lower CPU OC back to stock max 1400 MHz setting
3 To find out which frequency cause the freeze :
a) If you have UV the CPU and the device freeze, obviously you need to increase the voltage to a particular frequency step(s)
b) Do a stress test with SetCPU (or other app) and lock your max frequency for each step (DO NOT SET ON BOOT WHILST TESTING)
4 Try a different governor
5 Use a different benchmark app/tool
AnTuTu Crashes?
* Try another benchmark app !
Low Bench-Marking Scores
* Consectutive tests as well as OC may heat the CPU high enough where thermal limiting occurs. Well here you go........... I observed my CPU regularly drop to 800 MHz after hitting a thermal limit during testing.
Here's the proof !
https://github.com/UpInTheAir/P6800_JB_SkyHigh_Kernel/blob/master/arch/arm/mach-exynos/mach-px.c
Code:
#ifdef CONFIG_EXYNOS4_SETUP_THERMAL
/* below temperature base on the celcius degree */
struct s5p_platform_tmu px_tmu_data __initdata = {
.ts = {
[COLOR="Red"].stop_1st_throttle = 61,
.start_1st_throttle = 64,[/COLOR]
.stop_2nd_throttle = 87,
.start_2nd_throttle = 103,
.start_tripping = 110,
.start_emergency = 120,
.stop_mem_throttle = 80,
.start_mem_throttle = 85,
},
.cpufreq = {
.limit_1st_throttle = [COLOR="Red"]800000[/COLOR], /* 800MHz in KHz order */
.limit_2nd_throttle = 200000, /* 200MHz in KHz order */
* With some undervolt and governor tuning, little OC impact will be felt on battery. Not everyone fixes their CPU to max with performance governor so, providing your hardware can handle it, some OC should be OK for everyday use as the CPU only briefly scales to max freq with the 'right' governor.
* As you can see, this could be easily changed to allow (cheat) in benchmarks. This won't make much difference to everyday use, but IMO shouldn't be touched. My silicon may not handle it
RESET CUSTOM FLASH COUNTER
*There is a Samsung Galaxy Tab 7.7 flash counter introduced for P6800 JB 4.1.2 DXMD3, so any modified ROM, kernel or recovery flashed via PC Odin will increase the counter.
1. Have installed my P6810/P6800 SkyHigh kernel for JB 4.1.2 (patched for triangle away compatibility)
2. Install triangle away app v3.26
3. Reset counter
4. Reboot as requested
5. To check > open app again, or, power off and enter download mode
* Your custom ROM, kernel, recovery & root remain intact
Anything else, IF I find the time
.

A few things to do yet to bring it on par with the P6800 SkyHigh kernel.
ie. exFAT, init.d (think not working), custom bootanimation & sound support, some more tweaks etc
Edit: forgot to mention, frandom is only 1/2 way there. Removed from initramfs SkyHigh install script as well. Will look into it in good time.
Please be patient, I have other things to do

Thanks so much! Will flash asap.
Sent from my E330 using xda app-developers app

Downloading, thanks to make our tablet live.

Many thanks UpInTheAir..
You're the only reason my P6810 is not for sale.:highfive:

Thank you very much

Just for a change, been having a play around cooking a test ROM and mods. Been a while since I've done that, but it's like riding a bike, little shaky a first, but never forget. I have no plans for the ROM.
Will take a look at this kernel again tomorrow. Expect an update in the next day or so.
Sent from my GT-I9500 using XDA Premium 4 mobile app

Update on development.
Update on development.
Looks like the next update could be a little longer than hoped.
Have managed to get just about everything working same as current P6800 kernel (plus implementing fstrim lagfix on boot),.......
EXCEPT USB-OTG keeps constantly mounting/unmounting. Have not found the exact cause yet, and is something to do with the initramfs SkyHigh.sh install script or maybe the init.rc entry to initiate it.
I have compiled 20-30 kernels today, time for a break.......

v1.5.0 update
>> v1.5.0 UPDATE <<
** FOR P6810 Wi-Fi device running bodivas JB 4.1.2 DXMD3 ROM Port ONLY !! **
++ SOMEONE PLEASE CONFIRM USB-OTG WORKS - I THINK MY ADAPTER IS BROKEN ++
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
CHANGE-LOG v1.0.0 -> v1.5.0
* R/W and auto-mounting of exFAT USB-OTG & external sdcard
* Modded ROM /system/etc/vold.fstab to permit exFAT mounting
* IO scheduler set the same for internal & external sdcards via initramfs : default = SIO
* Updated to SuperSU 1.65 & binary v1.61 (installs only if you don't have any)
* fstrim lagfix on boot (trims system, data & cache) - slows down reboot, but who cares, aren't we more concerned with using device?
* Frandom now working
* Fixed all initramfs mods & tweaks
* init.d support & set to 777
* Thunderbolt IO scheduler tweaks
* Power saving & virtual memory tweaks
* Increased windowsmgr.max_events_per_sec from 90 to 200
* External sdcard read ahead cache set to 1664 KB
* Custom boot animation support
* Custom boot sound support
* Removed some module debugging
* Force close freeze fix​
TO-DO
* Lots
INSTALLATION
1. NANDROID (just in case)
2. Flash bodivas P6810 JB 4.1.2 ROM Port
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
5. Reboot again to fstrim your partitions
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
* The CPU freq may exceed the max cap setting on wakeup. ie max CPU freq set @ 1400 MHz -> turn on screen -> 1600 Mhz very very briefly -> then back down
Can't fix the CPU Level 0 bug. Refer to my post HERE. It is a FIRMWARE bug present in both stock and SkyHigh kernels​
ISSUES?
* READ POST #2 & #3 FIRST
CHEERS
UITA
.

v1.6.0 update
>> v1.6.0 UPDATE <<
** FOR P6810 Wi-Fi device running bodivas JB 4.1.2 DXMD3 ROM Port ONLY !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
CHANGE-LOG v1.5.0 -> v1.6.0
* Fixed my omission to make kernel insecure
* Disable modem in config file (our device is a WiFi model)
TO-DO
* Lots
INSTALLATION
1. NANDROID (just in case)
2. Flash bodivas P6810 JB 4.1.2 ROM Port
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
5. Reboot again to fstrim your partitions
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
* The CPU freq may exceed the max cap setting on wakeup. ie max CPU freq set @ 1400 MHz -> turn on screen -> 1600 Mhz very very briefly -> then back down
Can't fix the CPU Level 0 bug. Refer to my post HERE. It is a FIRMWARE bug present in both stock and SkyHigh kernels​
ISSUES?
* READ POST #2 & #3 FIRST
CHEERS
UITA
.

No problems with usb-otg in 1.6.
Thanks UpInTheAir.
---------- Post added at 10:53 PM ---------- Previous post was at 10:52 PM ----------
No problems with usb-otg in 1.6.
Thanks UpInTheAir.

el_campi said:
No problems with usb-otg in 1.6.
Thanks UpInTheAir.
---------- Post added at 10:53 PM ---------- Previous post was at 10:52 PM ----------
No problems with usb-otg in 1.6.
Thanks UpInTheAir.
Click to expand...
Click to collapse
Thanks for confirming.
I wasted a lot of time "chasing my tail", so frustrating, but a relief it's was my adapter.
Looks like I need to eBay

UpInTheAir said:
>> v1.6.0 UPDATE <<
** FOR P6810 Wi-Fi device running bodivas JB 4.1.2 DXMD3 ROM Port ONLY !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
CHANGE-LOG v1.5.0 -> v1.6.0
* Fixed my omission to make kernel insecure
* Disable modem in config file (our device is a WiFi model)
TO-DO
* Lots
INSTALLATION
1. NANDROID (just in case)
2. Flash bodivas P6810 JB 4.1.2 ROM Port
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
5. Reboot again to fstrim your partitions
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
* The CPU freq may exceed the max cap setting on wakeup. ie max CPU freq set @ 1400 MHz -> turn on screen -> 1600 Mhz very very briefly -> then back down
Can't fix the CPU Level 0 bug. Refer to my post HERE. It is a FIRMWARE bug present in both stock and SkyHigh kernels​
ISSUES?
* READ POST #2 & #3 FIRST
CHEERS
UITA
.
Click to expand...
Click to collapse
Guys, you are marvelous !
From the Galaxy

v1.7.0 update
>> v1.7.0 UPDATE <<
** FOR P6810 Wi-Fi device running JB 4.1.2 DXMD3 ROM !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
** DELETE ANY INIT.D 90lagfix SCRIPT BEFORE FLASH **
CHANGE-LOG v1.6.0 -> v1.7.0
* Reverted in-built entropy generator for now
* Added sleep 60 command to lagfix script. Minimal impact on boot time now
* fstrim lagfix will now trim preload partition (there is no app that can do this, only this tweak !!)
* lagfix tweak can now be disabled and re-enabled. Please refer to Post #3
INSTALLATION
1. NANDROID (just in case)
2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
5. Reboot again to fstrim your partitions
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
* The CPU freq may exceed the max cap setting on wakeup. ie max CPU freq set @ 1400 MHz -> turn on screen -> 1600 Mhz very very briefly -> then back down
Can't fix the CPU Level 0 bug. Refer to my post HERE. It is a FIRMWARE bug present in both stock and SkyHigh kernels​
ISSUES?
* READ POST #2 & #3 FIRST
CHEERS
UITA
.

v1.8.0 update
>> v1.8.0 UPDATE <<
** FOR P6810 Wi-Fi device running JB 4.1.2 DXMD3 ROM !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
CHANGE-LOG v1.7.0 -> v1.8.0
** Source changes as per gitHub
* fix for the CPU scaling above max set frequency (thanks Yank555.lu)
* 18-step CPU : add 1700 & 1800 MHz CPU OC options (for battery & stability, not recommended above 1600 MHz)
* zRAM (still off by default)
use two CPU's (zram0 & zram1)
zRAM tweak​* decrease IO latency
* mount partitions NOATIME and NODIRATIME by default
* add sysfs interface to enable / disable thermal throttle (default on) – be careful here, do you want to melt your CPU?
* tweak default xz compression ratio for slightly faster boot speed
* +25mV for all CPU freq 100-1400 MHz - stock levels now (you can UV yourself)
* disable gentle fair sleepers - improve UI responsiveness
* disable linux printk & add sysfs interface to enable / disable
* enable Westwood+ TCP algorithm (default still cubic) – some testing by other users show an increase a network throughput – test for yourself and share results!
** initramfs changes
* Virtual memory & kernel tweak values from V6SuperCharger - [email protected]
vm.oom_kill_allocating_task=0
vm.panic_on_oom=0
vm.vfs_cache_pressure=10
vm.overcommit_memory=1
kernel.panic_on_oops=0
kernel.panic=0​
* RAM Management values from V6SuperCharger - [email protected]
tweak LMK OOM adj & minfree values (512HP Super UL)
much reduced lag as current apps aren't starved of memory when android LMK kills off background apps
slightly less mutli-tasking​
SkyhIgh default :
adj = 0,3,6,10,12,15
minfree = 2048,3584,19200,23040,24320,32000 (8-14-75-90-95-125 MB)​
* init.d support moved to end of script
* fstrim lagfix - fixed having to reboot twice after enable ".lagfix_on". Just create the file in internal sdcard and reboot ONCE
* auto set init.d scripts to 777 – no need to manually set script permissions, just drop in & reboot
INSTALLATION
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
1. NANDROID (just in case)
2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
5. enable fstrim & reboot twice to install & fstrim your partitions
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
ISSUES?
* READ POST #1, #2 & #3 FIRST
CHEERS
UITA
.

V1.9.0 update
>> v1.9.0 UPDATE <<
** FOR P6810 Wi-Fi device running JB 4.1.2 DXMD3 ROM !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
CHANGE-LOG v1.8.0 -> v1.9.0
** Source changes as per gitHub
* 4-step GPU Control interface (sysfs) via init.d script (EXAMPLES IN POST #3)
clock
voltage
step thresholds
stay counts​
* Change to lzo compression (slightly faster boot at expense of zImage size)
* xz compressor tweaked (not currently in use)
* SLUB - small performance tweak
* Stop compiling unuded 4x12 objects on 4210
* Corrected OP
160 MHz = 900mV (-100 mV > stock 1000 mV)
267 MHz = 950 mv (-150 mV > stock 1100 mV)
Click to expand...
Click to collapse
INSTALLATION
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
1. NANDROID (just in case)
2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
ISSUES?
* READ POST #1, #2 & #3 FIRST
CHEERS
UITA
.

v2.0.0 update
>> v2.0.0 UPDATE <<
** FOR P6810 Wi-Fi device running JB 4.1.2 DXMD3 ROM !! **
1. Read warnings in Post #3 before flashing. I am not responsible, you are
2. Clear your CPU Control app defaults first. device settings/applications/all/"your control app"/clear data
3. You will need a CPU control app to adjust the CPU freq from the safe startup values (OC / UV / UC)
4. Recommend 200-1400 -or- 200-1600 MHz
5. Recommended governors etc = Read Post #3
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
CHANGE-LOG v1.9.0 > v2.0.0
** Source changes as per gitHub
* Increased from 4 to 5-step GPU : Default = 108-160-267-330-400 MHz
Min freq = 54 MHz (lower than 108 MHz may cause lag, freeze or SOD)
Max freq = 520 MHz
Valid freq (useable) = 54-66-108-160-160-200-267-300-330-400-440-520 MHz
Voltage = 800 > 1200 mV (+/- 50 mV increments)
Stock = 2-step GPU (160-267 MHz)​
* GPU UV / UC / OC
108 MHz = 900mV
160 MHz = 900mV (-100 mV > stock 1000 mV)
267 MHz = 950 mv (-150 mV > stock 1100 mV)
330 MHz = 1000 mV
400 MHz = 1050 mV​
* 5-step GPU Control interface (sysfs) via init.d script Control interface (EXAMPLES IN POST #3)
clock
voltage
step thresholds
stay counts​
* Fixed GPU staycount interface not applying changes
* Lower GPU idle (screen off) freq to 108 MHz & voltage to 900 mV
* Lower min GPU configurable voltage to 800 mV
Default still = 900 mV for stabilty (lower may cause freeze or SOD - depends on device)
Stable 108 MHz @ 800 mV on my device, maybe not yours?​
* Tweak GPU freq thresholds
INSTALLATION
** REMOVE ALL PREVIOUS SkyHigh ROM SCRIPTS FROM /system/etc/init.d FOLDER (EXCEPT: sqlite & ziplaign are OK) **
1. NANDROID (just in case)
2. Flash SkyHigh P6810 JB 4.1.2 ROM or bodivas P6810 JB 4.1.2 ROM
3. Remove any previous CPU control settings from starting at boot
4. Flash in :
a) CWM.zip in custom recovery (CWM or TWRP)
-or-
b) ODIN.tar in Odin [PDA] / Mobile Odin​4. THIS WILL PROBABLY "BREAK" currently installed V6SuperCharger scripts ! (test kernel first, and then re-install scripts)
SUGGESTED CPU CONTROL APP : Trickster Mod app
Don't forget to use only one Control app at a time. They will conflict !
CURRENT BUGS :
* Random screen tint (Read Post #3)
ISSUES?
* READ POST #1, #2 & #3 FIRST
CHEERS
UITA
.

Anybody else having problems with the download links for the latest update?
Sent from my GT-P3110 using XDA Premium HD app

[KERNEL] [SM-T800 WIFI & T805 LTE] [12 Mar] SkyHigh TW KK Kernel [v3.3] [Synapse ++]

[KERNEL] [SM-T800 WIFI & T805 LTE] [12 Mar] SkyHigh TW KK Kernel [v3.3 FINAL] [Synapse ++]
I DO NOT SUPPORT THIS KERNEL OR THREAD ANY LONGER, SO PLEASE FLASH AT YOUR OWN RISK AND DO NOT PM FOR HELP or Q&A. ANY USER or DEV KANG THIS KERNEL WITHOUT PERMISSION WILL BE REPORTED
Click to expand...
Click to collapse
10.5" SM-T800 WIFI & T805 LTE TW 4.4.2 Exynos 5420 supported in thread only !!
PLEASE POST QUESTIONS THAT ARE NOT DEVELOPMENT RELATED IN Q&A HERE. THIS WILL HELP KEEP THINGS TIDY
BEFORE POSTING, ENSURE YOU READ POSTS #1-3 AND SEARCH THREAD FOR INFO FIRST. THANK YOU FOR YOUR ASSISTANCE
THREAD RULES & PROTOCOLS FOR THIS DEVELOPMENT THREAD:
BY POSTING YOUR ISSUES IN THIS THREAD, YOU ARE AGREE TO ABIDE BY THE FOLLOWING
DEVICE MODEL
ROM and firmware version etc
EXACT steps taken to reproduce YOUR isssue
Screenshots (if applicable)
Did you read Posts #1-3 completely?
Did you search the thread, XDA or GOOGLE?
Did you follow the install instructions EXACTLY?
What was your previous kernel?
Do you have any other known kernel tweaking apps, scripts or mods? (remove them)
Try older kernel (don't not flash anything older than v0.9 )
Try lastest stock firmware (without custom ROM - if you have installed)
ONLY IF YOU HAVE TRIED SUGGESTIONS ABOVE:
Turn on logging in Synapse and save logs AT TIME OF ERROR. AND post together with ALL the above information.
ELSE, DON'T WASTE MY TIME, YOU WILL BE IGNORED AND/OR POST REPORTED !!
THANK YOU :good:
I don't have time to build for any more devices I can't personally test & debug - sorry.
Let get it straight, I am not a real Developer, but I am UpInTheAir, part time kernel “hack” of SM-T700/705, SM-N9005 LTE, SGT 7.7 JB & ICS Kernels. I now share with you my Exynos5 TW SM-T800 WIFI & SM-T805 LTE kernels compiled from official Samsung sources.
* I don't pretend to know everything, so if you can be constructive and help out this project, please do so. You will find allot of answers by searching gitHub, XDA and SEARCH Just like I do …......
>> SCREENSHOTS << from T705 v0.5 : might not be always up-to-date !
FEATURES
* Based on official Samsung source: T705WVLU1ANJ5
* ramdisk source: T800XXU1ANJ6 & T805XXU1AOA1
* Built with Stock ARM Toolchain 4.7 (proven stabilty + efficiency + performance)
* Compiled with KERNEL_MODE_NEON & -mfpu=neon-vfpv4 + optimizations
* ARM: UNALIGNED_ACCESS
* KNOX WARRANTY VOID: 1
* SELinux PERMISSIVE or Enforcing
* adb insecure
* ROM Knox disable/freeze via Synapse control
* init.d script support (drop in script & set permissions to 755 or 777 and reboot)
* busybox v1.22.0-Dream-IRC installed to /sbin
* Will NOT delete your WIFI settings & passwords
* Possible Screen Mirroring / AllShare Cast fix
* Synapse app support for almost all kernel configurations + more !!
Many descriptions are in the app ! If you require more info, don't be lazy, please SEARCH like I did !
SYNAPSE FEATURES
CPU FREQ
CPU max frequency A15 cores = 2100 MHz (stock/default = 1900 MHz)
CPU min frequency A7 cores = 200 MHz (stock/default = 500 MHz)
A15 big & A7 LITTLE Cores time in state
CPU MULTICORE
Mult-core Hotplug Management
Screen OFF mode (fixed default)​Exynos Dynamic CPU Hotplug Freq (A7 cores)
Hotplug CPU UP load
Hotplug CPU UP boost
Hotplug CPU DOWN hysteresis​
Multi-core power saving control (sched_mc_power_savings)
Power-efficient Workqueues control
CPU VOLT
Voltage control for:
big cores
LITTLE cores​
CPU GOV
CPU governor
interactive (default)
on-demand (tweaked to use power efficient workqueues)
conservative​
CPU governor tunables
DEVFREQ
CPU internal frequency voltage control (Stock 133-600 MHz)
83-133 - 222 - 333 - 400 - 440 - 460 - 480 - 500 - 600​
Memory frequency voltage control (stock 160-733 MHz)
133-160 - 200 - 266 - 400 - 533 - 667 - 733 (1.9 GHz) - 800 (2.0 GHz) - 933 (2.1 GHz)​
GPU
Midgard GPU power policy control
coarse_demand (default)
demand (stock)
always_on​
Midgard GPU power policy threshold control (profiles)
Battery (default)
On-demand
Peformance​
GPU max frequency = 667 MHz (stock/default = 480 MHz)
GPU min frequency = 100 MHz (stock/default = 177 MHz)
GPU voltage control
GPU freq time in state
GPU QoS
MScaling settings for:
MIF
INT
CPU​
IO
I/O Schedulers
BFQ (default - tweaked for SSD)
DEADLINE (tweaked for SSD)
CFQ
NOOP
FIOPS
SIO
ZEN​
Int storage scheduler
Int storage read-ahead (512 KB for 16 GB partition)
General IO tuneables
I/O scheduler tunables
MEMORY
Ultra Kernel SamePage Merging (UKSM)
UKSM stats
Scan delay interval
UKSM CPU governor (profiles)
Max CPU consumption (use with FULL governor)​
Dynamic Fsync control (default enabled)
Dynamic management of dirty page writebacks
Active
Suspend​
Virtual Memory
VNSWAP control
ZSwap memory pool control
Adaptive Dirty Background Ratio on Suspend / Resume
Adaptive Dirty Ratio on Suspend / Resume
Drop caches (Clear VFS cache after boot)
Laptop Mode
Swapiness
Adaptive VFS Cache Pressure on Suspend / Resume​
POWER SUSPEND
PowerSuspend
Autosleep_hook
Userspace_trigger
DisplayPanel_hook
Hybrid_hook (default)​
PowerSuspend State (only with Userspace_trigger)
ADVANCED
Low Menory Killer Profiles
Low
Medium
Default
Agressive
Exterminate​
Low Memory Killer minfree tuning (OOM LMK)
Management of not killable processes whitelist
system apps
user apps​
Entropy
Gentle Fair Sleepers control
Arch Power control (enabled)
randomize_va_space control
Dynamic management of minimal timer slack value (active & suspend)
Generic and core apps/processes
Apps/processes in foreground
Apps/processes in background and non interactive​
THERMAL
CPU thermal control
GPU thermal control
Memory interface thermal control
AUDIO
* WolfsonMicro Sound Control by AndreiLux
* parametric equalizer presets & tuning by heyjoe66
Mono mixer
Speaker amplification
Left channel volume
Right channel volume
Earpiece volume
Privacy mode​
SP equalizer control
HP equalizer control
BATTERY
Battery info
Unstable power detection
AC mains
Standard downstream port
Dedicated charging port
Charging downstream port
Accessory charger adapter
Miscellaneous charging
MHL power
Battery Scaling Calibration (fuel-gauge chip reset)
NETWORK
TCP congestion control
All available enabled.
Default = westwood+​
Screen mirror/allshare cast fix control (default = enabled)
Clean WIFI Lease
WiFi Power Mode While Screen-On/Off
Force Off
Off
Fast (default = screen ON)
Max (default = screen OFF)​
WiFi DTIM Interval While Screen-On/Off
tcp_default_init_rwnd
TCP/IP network security
TCP/IP network speed (default = enabled)
3G DNS speed & security tweak
Google, OpenDNS, Comodo, Level3, Norton_DNS, Smart_Viper​
GPS region TEMPORARY REMOVED IN v2.0.0
Default, Asia, Europe, Oceania, North America, South America, Africa​
IVP6 Optimistic Detection
optimistic_dad (enabled)
use_optimistic (enabled)​
USB TEMPORARY REMOVED IN v2.0.0
UMS (USB Mass Storage) mode
MTP mode
USB Keyboard / Mouse (with USB Keyboard app)
SECURITY
KNOX control (default "NO_ACTION")
SELinux status control
Permissive (default)
Enforcing​
SYSCTL
FS SYSCTL
Kernel SYSCTL
Net SYSCTL
VM SYSCTL
FS (File System)
Display FS Type
FS Controls
remount System r/w r/o
remount RootFS r/w r/o​
SPI CRC settings control (disabled)
Optimise Databases (SQLite3)
File System Trim
Wipe Options
cache reboot
dalvik-cache reboot
cache & dalvik-cache reboot
clipboard cache
tombstones​
BACKUP & RESTORE
Name - Restore - Delete - Backup
profiles
kernel image​
REBOOT
Reboot device
Recovery Mode
Download Mode
Power Off
Clear Synapse Data
Restart Synapse
LOGS
Android logger control (disabled)
logcat
Kernel logger printk control (dmesg)
dmesg
last_kmsg
INFO
* xz kernel compression
* Reduced logging
* enable ARCH_POWER
* use WQ_POWER_EFFICIENT
* optimized SLUB memory allocator
* Frandom
* mount partitions NOATIME and NODIRATIME by default
* FIDTRIM
* F2FS support in source and ramdisk (not tested)
* exFAT FS support
* NTFS R/W support with app
* CIFS support
* Asynchronous Fsync
* WIFI: filter multicast packages while suspended
* /proc/.config.gz support
* CRYPTO_SHA1_ARM_NEON, CRYPTO_SHA512 & CRYPTO_SHA512_ARM_NEON
* NVIDIA power efficiency patches
* Low Memory Killer tweaks
* Microsoft X-BOX gamepad controller in-built module
* And lots lots more ...................
CREDITS
* My family !!
* BeansTown106 & Chainfaire for bringing root
* halaszk88 - initial sysnapse layout & many source commits
* AndreiLux - many many contributions to Exynos kernel development & Synapse app
* apbaxel - various synapse controls I've adapted
* Christopher83 - all things dynamic !
* faux123 - various patches
* Yank555 - various patches
* heyjoe66 - Wolfson parametric equalizer presets & tuning. Also Dynamic Hotplug implementation
* XDA
* Samsung OSRC
* and many others!
* check github source credits
* IF I'VE FORGOTTON ANYONE, PLEASE DON'T BE SHY AND SPEAK UP, THANKS
XDA:DevDB Information
SM-T800 WIFI & T805 LTE TW Kernel, Kernel for the Samsung Galaxy Tab S
Contributors
UpInTheAir
Source Code: https://github.com/UpInTheAir/Galaxy-Tab-S-Kernel/commits/SkyHigh
Kernel Special Features: Synapse ++ Read OP
Version Information
Status: Abandoned
Current Stable Version: v3.3 FINAL
Stable Release Date: 2015-03-12
Created 2014-08-22
Last Updated 2015-04-14

Requirements - installation & download
** DISCLAIMER : FLASH AT YOUR OWN RISK **
WARNING :
* Under-volting can cause instability
* Over-clocking can cause freeze/reboot, heat & damage to CPU, GPU or other hardware
* Any customizations may void warranty
* May not be suitable for your device or customizations
* UpInTheAir is NOT responsible, the person you see in the mirror is !
REQUIREMENTS
Watch >> THIS <<
SM-T800 WIFI or T805 LTE Exynos device
TW Kit Kat 4.4.2
Rooted
TWRP Recovery
CHANGE-LOG
v3.3 [12-March-2015]
kernel :
Revert "net: wireless: bcmdhd4354: Fixed failure to enter PS mode while roaming in suspend" (reverting fixes reported issue of "slow & laggy" connection on 5GHz WIFI)
v3.2 [12-March-2015]
ramdisk :
Synapse: FS: remove "Wipe Cache" and "Wipe Dalvik-Cache" options (may cause user app issue who forget to reboot)
Synapse: FS: add "Wipe Cache & Dalvik-Cache Reboot" option
kernel :
Revert "ipv4: try to cache dst_entries which would cause a redirect" (reverting fixes reported issue of "slow & laggy" connection on 5GHz WIFI)
v3.1 [11-March-2015]
ramdisk :
init.rc: remove some boot defaults (set in source)
Synapse: GPU QoS: FIX GPU CPU QoS display correct CPU (A7) freq, ie CPU freq 250 is now displayed as 500 MHz for GPU 177 MHz, and so on
Synapse: FS: add Wipe tombstones option
Synapse: MEMORY: change dirty_ratio & dirty_background_ratio to Adaptive and update descriptions.
kernel :
mm/page-writeback.c: enabled Dynamic Dirty Writeback by default
mm: Implement Adaptive Dirty Background Ratio & Dirty Ratio for suspend/resume [by UpInTheAir]
config: enable ADAPTIVE_DIRTY_BACKGROUND_RATIO & ADAPTIVE_VM_DIRTY_RATIO
mm: adjust dirty_background ratio to mirror ramdisk init.rc value
mm: adjust swappiness value to mirror ramdisk
fs: make ADAPTIVE_VFS_CACHE_PRESSURE compile optional [by UpInTheAir]
config: enable ADAPTIVE_VFS_CACHE_PRESSURE
v3.0 [09-March-2015]
ramdisk :
Synapse: FS: add FSTrim push button
Synapse: FS: add Wipe Options - Wipe Cache, Wipe Cache Reboot, Wipe Dalvik-Cache, Wipe Dalvik-Cache Reboot, Wipe Clipboard Cache
Synapse: BACKUP RESTORE: FIX backups not being restored
Synapse: BACKUP RESTORE: rework and now able to add names to Profile and Kernel Backups !!
kernel :
Samsung DYNAMIC Hotplug control: hotplug_cpu_up_boost_value 90 > 0 (better UI performance with all cores on like stock. Battery nuts can set to 30%)
timer: optimize apply_slack()
kernel/timer.c: Optimize apply_slack() for size and speed
block: recursive merge requests
ipv4: try to cache dst_entries which would cause a redirect
net: wireless: bcmdhd4354: Fixed failure to enter PS mode while roaming in suspend
v2.9 [05-March-2015]
ramdisk :
sbin: SkyHigh.sh: Do not kill system and user app processes enabled by default
sbin: SkyHigh.sh: added some default processes
init.rc: set SELinux Permissive by default on boot
init.rc: add support for timer slack values and defaults
Synapse: CPU MULTICORE: remove Hotplug mode control (Hotplug screen on & off mode is default permanent). Screen off mode is just too buggy, there is a work-around which I'll add to Post #3 PERFORMANCE section
Synapse: CPU GOV: FIX seekbar (replace it) not setting sampling rate when changing to conservative gov
Synapse: ADVANCED: add Dynamic timer slack controls & default values for battery savings ( thanks to Christopher83 )
Synapse: SECURITY: add SELinux Status control (toggle between Enforcing & Permissive)
Synapse: FS: add SPI CRC Settings control (already disabled by default in source)
Synapse: LOGS: add printk (kernel dmesg) control
Synapse: tidy up & a few other minor things
kernel :
Revert "SELinux: set permissive in source instead of ramdisk
SELinux: permit Enforcing > Permissive changes in ROM
drivers/mmc: spi CRC configurable
cpufreq: interactive: don't schedule timer on offline cpu
cpufreq: interactive: delete timers for GOV_START
cpufreq: conservative: adjust freq dn threshold so hotplug cores lower to A7 values at low load
mm: remove compressed copy from zram in-memory
Samsung DYNAMIC Hotplug control: sync with oloendithas
Makefile: fix DYNAMIC Hotplug control compile warnings
tick: Upstream fixes
kthread_work: wake up worker only when the worker is idle
config: enable DEBUG_HOTPLUG
cgroups: Introduce timer slack controller
kernel: cgroup_timer_slack: Adaptations for 3.4 kernel
config: enable CGROUP_TIMER_SLACK
kernel: cgroup_timer_slack: Dynamic management of timer slack
kernel: cgroup_timer_slack: Dynamic management of timer slack - adapt for PowerSuspend driver
config: CGROUP_DYNAMIC_TIMER_SLACK
sched: Set MC (multi-core) sched domain's busy_factor attribute to 1
Makefile: Turn off -Wmaybe-uninitialized when building with -Os
CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug
printk: Add sys kernel interface to configure linux printk logging
printk: make sysfs kernel interface compatible with Synapse app
scripts: gcc-wrapper: Use wrapper to check compiler warnings
Makefile: implement CCACHE properly
Makefile: Fix gcc-4.9.0 miscompilation of load_balance() in scheduler
Makefile: optimize flags
Samsung DYNAMIC Hotplug control: screen on & off mode set default
WLAN subsystem: Sysctl support for key TCP/IP parameters
Samsung DYNAMIC Hotplug control: hotplug_cpu_up_boost_value 90 > 30
v2.8 [28-February-2015]
ramdisk :
init.rc: set Wolfson speaker equalizer switch off by default
synapse: add CPU MULTICORE tab: add Holtplug controls for screen off & on/off modes
synapse: CPU FREQ: move CPU multi-core power saving & Power Efficient WQ controls to CPU MULTICORE
synapse: MEMORY: remove KSM & add UKSM controls
synapse: SYSCTL KERNEL: fix apply/discard bug
kernel :
Samsung DYNAMIC Hotplug control
Hotplug: set to Screen OFF mode by default
scheduler: update BFQ-v7r4 to BFQ-v7r7 for 3.4.0
UKSM v1.2.2
UKSM: fix compile warnings
config: enable UKSM
Hotplug: prevent changes to user set scaling_min_freq_gpu
v2.7 [02-February-2015]
ramdisk :
init.rc: set optimistic DAD enabled
synapse: SYSCTL: add separate FS-KERNEL-NET-VM (if you don't understand what each does, don't touch)
synapse: ADVANCED: add Arch Power control (enabled)
synapse: NETWORK: add IVP6 Optimistic Detection (enabled)
kernel :
net: wireless: bcmdhd4358: reduce kernel logging
page_alloc: Make watermarks tunable separately
powersuspend: various patches/fixes
usb: gadget: check for accessory device before disconnecting HIDs
ipv6: clean up anycast when an interface is destroyed
xt_qtaguid: Use sk_callback_lock read locks before reading sk->sk_socket
ARM: compile KERNEL_MODE_NEON with -mfpu=neon-vfpv4
Makefile: various (experimental) kernel build optimizations
sched: Add controls for sched features
ARM: compile vfp with softfp
v2.6.0 [30-Jan-2015]
ramdisk :
synapse: NETWORK: FIX apply/discard bug for TCP speed/security & 3G DNS tweaks
synapse: NETWORK: add Screen mirror/allshare cast fix control
Synapse: NETWORK: add Clean WIFI Lease
synapse: NETWORK: set TCP/IP Network Speed tweak "Enabled" by default
Synapse: ADVANCED: add LMK profiles
Synapse: MEMORY: add KSM stats
Synapse: MEMORY: add Drop caches (default enabled)
Synapse: BATTERY: add battery scaling re-calibration instructions
kernel :
arch: arm: lib: optimize memcpy for cortex-A15
config: enable ARM_PLD_64BYTE & USE_LDRDSTRD_OVER_LDMSTM
Revert "BCMDHD4354: WIFI: POWERSUSPEND support (not using with panel on/off powersuspend hooks)
v2.5.0 [24-Jan-2015]
ramdisk :
T805XXU1AOA1 ramdisk
synapse: GPU QoS: add GPU QoS controls for: MIF, INT, CPU
synapse: AUDIO: add controls for speaker amplification & equalizer
ramdisk: /sbin/SkyHigh.sh: add Wolfson sound defaults (parametric equalizer presets & tuning by heyjoe66)
kernel :
sched: Implement smarter wake-affine logic
cpufreq: interactive: decrease timer_slack to 70ms
kernel/power/powersuspend: add display panel hooks for powersuspend
kernel/power/powersuspend: add missing version numbers
wolfson sound control: Fixed stereo EQ and DRC for headphones and speakers
byteorder: allow arch to opt to use GCC intrinsics for byteswapping
CPU unaligned access path
ARM: enable UNALIGNED_ACCESS
Makefile: enable unaligned access
config: enable HAVE_EFFICIENT_UNALIGNED_ACCESS
fs/dcache.c: Fix the too small buffer for dname
GPU: add interface to modify GPU governor scaling table for MIF/INT/CPU QoS freq
Makefile: fix compile error
devfreq: INT: unlock 83 MHz min freq
devfreq: MIF: unlock 133 MHz min freq
v2.4.0 [17-Jan-2015]
ramdisk :
synapse: GPU: FIX GPU governor not setting on reboot
synapse: MEMORY: update Dynamic Dirty Page Writeback description
kernel :
cpufreq: interactive: use new CPUFREQ_RELATION_C
fs: vfat: reduce the worst case latencies
config: enable XPAD support (Microsoft X-BOX gamepad)
mm: pass readahead info down to the i/o scheduler
v2.3.0 [12-Jan-2015]
ramdisk :
/sbin/SkyHigh.sh: add NTFS r/o mounting (/mnt/ntfs/). For r/w, use paragon app.
kernel :
block: sysfs: allow non superusers to change I/O scheduler
Fix dynamic read-ahead
binfmt_elf.c: use get_random_int() to fix entropy depleting (max = 4096)
android: lowmemorykiller: add lmk parameters tunning code
lowmemorykiller: Account for highmem during kswapd reclaim
cpufreq: interactive: don't skip waking up speedchange_task if target_freq > policy->cur
omdemand: lower down_step_level to 100 (aka 200) MHz
cpufreq: Introduce new relation for freq selection
Squash 'enhance power efficiency' patches
vfs: fix bad hashing of dentries
selinux: whitelist f2fs
SELinux: Fix memory leak upon loading policy
selinux: just shut up
selinux: fix inode security list corruption
fs: Add a missing permission check to do_umount
kernel: add support for gcc 5
crypto: create generic version of ablk_helper
ARM: pull in <asm/simd.h> from asm-generic
crypto: sha1: add ARM NEON implementation
config: CRYPTO_SHA1_ARM_NEON
crypto: ablk_helper - Replace memcpy with struct assignment
crypto: add crypto_[un]register_shashes for [un]registering multiple shash entries at once
crypto: sha256 - Expose SHA256 generic routine to be callable externally
crypto: sha512 - Expose generic sha512 routine to be callable from other modules
ARM: 8120/1: crypto: sha512: add ARM NEON implementation
config: enable CRYPTO_SHA512 & CRYPTO_SHA512_ARM_NEON
ARM: 7723/1: crypto: sha1-armv4-large.S: fix SP handling
board-lt03-battery: Longer battery polling interval
v2.2.0 [24-Dec-2014]
ramdisk :
init.rc: set GPU governor course_demand (set as default)
Synapse: GPU: add Midgard GPU power policy control
Synapse: GPU: add Midgard GPU power policy threshold control (set default profile "Battery")
Synapse: NETWORK: add 3G DNS speed & security tweak
Synapse: Some more clean up
kernel :
usb: gadget: mass_storage: added sysfs entry for cdrom to LUNs
Mali: proper GOV table on init; code cleanup
v2.1.0 [21-Dec-2014]
ramdisk :
FIXED CIFS: init.rc: Create mountpoint so Dalvik can mark as slave in zygotes to allow CIFS mounting and other app databases (forgot to include when updated ramdisk)
FIXED slow Synapse load on boot: KNOX: please set to "NO_ACTION" after set Disabled or Enabled. Knox will still be enabled or disabled.
Synapse: Lots of clean up of code and remnants of old files
Synapse: Tidy up of layout, added/remove/move tabs and features about
Synapse: CPU: added big.LITTLE CPU freq time in state
Synapse: GPU: added GPU freq time in state
Synapse: IO: added IO scheduler tunables
Synapse: BATTERY: added more info
Synapse: REBOOT: added Restart Synapse button
Synapse: INFO: added asv_group
Synapse: NETWORK: add TCP security
Synapse: NETWORK: add TCP speed
v2.0.0 [27-Nov-2014]
updater-script :
Removed ROM KNOX removal code (Synapse freeze/disable in Synapse control added)
ramdisk :
ramdisks from T800XXU1ANJ6 & T805XXU1ANJ5
init.rc/default.prop: removed SELinux permissive hack, now set in source
Synapse: Security: add KNOX enable/disable (freeze) control
Synapse: CPU: Power-efficient Workqueues control (default enabled)
Synapse: USB: remove storage options (temporary until fixed)
Synapse: Network: remove GPS tweak options - slowing down boot (temporary until fixed)
Synapse: various small tidy up and additions
kernel :
source update: T705WVLU1ANJ5
SELinux: set permissive in source instead of ramdisk
v1.9.1 [07-Oct-2014]
ramdisk :
synapse: FS: bug fix - Optimise Databases error if no sdcard/SkyHigh/Log folder not present
v1.9 [07-Oct-2014]
ramdisk :
init.rc: remove Gentle Fair Sleepers boot default - now disabled by default in source
synapse: Backup Restore: fixed bug not backing up & restore current kernel
synapse: FS: add push button to Optimise Databases (SQLite3)
kernel :
xz: tweaking kernel compression
af_unix: speedup /proc/net/unix
sched: disable GENTLE_FAIR_SLEEPERS by default
mm: don't wait for congestion when mem is high
block: disable add_random for more performance on SSD's
fs/dyn_sync_cntrl: on by default if enabled in defconfig
mmc: disable CRC check for better performance
mm: optimize Kernel Samepage Merging (KSM)
Input: send events one packet at a time
lib/int_sqrt.c: optimize square root algorithm
readahead: make context readahead more conservative
gpu: ion: system_heap: add support for 2MB allocations
CHROMIUM: clocksource: allow clocksources to be selected earlier during boot
v1.8 [30-Sept-2014]
ramdisk :
init.rc: Create mountpoint so Dalvik can mark as slave in zygotes to allow CIFS mounting and other app databases.
synapse: USB: add MTP mount option (if is doesn't mount storage properly on PC, just toggle between Default > MTP )
synapse: INT/MIF voltage control
kernel :
EXYNOS5420 MIF: unlock MIF 933 MHz & set for CPU 2.0+ GHz freq
opp: De-obscurify OPP structs and disclose find_device_opp
devfreq: add Exynos 5420 MIF voltage control
devfreq: add Exynos 5420 INT voltage control
MIF / INT fix
MIF / INT: allow 6250 mV increments
EXYNOS5420 MIF: set 800 MHz for CPU 2.0 GHz freq
workqueue: fix permission for power_efficient
v1.7 [21-Sept-2014]
kernel :
arch/arm/Makefile: adaptation to full neon-vfpv4 support
sched: GENTLE_FAIR_SLEEPERS fix unused cpu var
drivers/staging: configurable android log buffer sizes
config: set LOGCAT_SIZE=256
ext4: Speedup WB_SYNC_ALL pass called from sync(2)
bfq-iosched: tuning for SSD
ksm: check and skip page, if it is already scanned
config: enable KSM_CHECK_PAGE
config: enable Conservative & disable Userspace governor
v1.6 [17-Sept-2014]
ramdisk :
init.rc: set defaults: removed KSM deferred_timer as now set enabled in source
synapse: Network: tcp_default_init_rwnd (not sure how to tune the value yet)
synapse: Reboot: added Power Off option
kernel :
cifs: enable mounting cifs drives visible to all apps
config: enable CIFS RESTRICT_ROOTFS_SLAVE
block: Reserve only one queue tag for sync IO if only 3 tags are available
setlocalversion: do not append -dirty when there are un-committed changes
kswapd: reduce time spent in congestion_wait
workqueue: add system wide power_efficient workqueues (battery)
config: enable WQ_POWER_EFFICIENT (battery)
CPUFREQ: ondemand: use power efficient wq (battery)
mutex: Make more scalable by doing less atomic operations
mutex: Queue mutex spinners with MCS lock to reduce cacheline contention
writeback: fix writeback cache thrashing
sched: Make scheduler aware of cpu frequency state
bcmdhd4354: filter multicast packages while suspended (battery)
tcp: add a sysctl to config the tcp_default_init_rwnd
net: tcp: optimization with rcv_wnd
vfp/Makefile: compile with -mfpu=neon-vfpv4 & hard float
slub: optimized SLUB memory allocator
net: loopback: set default mtu to 64K
ksm: enable deferred_timer by default to prevent the CPU to be wakened for ksm activities
ext4: add support for FIDTRIM, a best-effort ioctl for deep discard trim (no idea if it's working)
Report permissive mode in avc: denied messages
config: disable mutex debugging
v1.5 [10-Sept-2014]
ramdisk :
init.rc: set defaults: Dynamic FSync enabled
kernel :
ARM: implement KERNEL_MODE_NEON
config: enable KERNEL_MODE_NEON
Makefile: added ccache for speed up kernel compile
sync: don't block the flusher thread waiting on IO
staging: android: lowmemorykiller: select a new task to kill
SELinux: Reduce overhead of mls_level_isvalid() function call
SELinux: Fix kernel BUG on empty security contexts
fix compile warning for Async Fsync
arm/crypto: add optimized AES and SHA1 routines
config: enable CRYPTO_SHA1_ARM & CRYPTO_AES_ARM
softirq: reduce latencies
ext4: speed up truncate/unlink by not using bforget() unless needed
mm: Clear page active before releasing pages
v1.4 [07-Sept-2014]
ramdisk :
synapse: Memory: VNSWAP control (1>1024 MB - Unable to disable (reset) / set size to 0 yet)
synapse: Memory: ZSwap memory pool control
synapse: Memory: Deferred Timer control
synapse: minor typo, cleanup & corrections to general layout and descriptions
kernel :
ksm: Provide support to use deferred timers for scanner thread
sched: LOAD_FREQ (4*HZ+122) avoids loadavg Moire
staging: android: lowmemorykiller: implement task's adj rbtree
config: enable ANDROID_LMK_ADJ_RBTREE
cpufreq: tidy up
block: add SIO I/O scheduler
block: add ZEN I/O scheduler
config: enable SIO & ZEN I/O schedulers
v1.3 [03-Sept-2014]
ramdisk :
synapse: Reboot: added Reboot to Download Mode
synapse: USB: USB Mouse / Keyboard control
ramdisk: file_contexts: add busybox to file_contexts to allow via SELinux
kernel :
cpufreq: Fake the IKS specific frequency table to stock values (fixes: corrects to stock CPU touch boost frequencies & CPU freq in Power Saving Mode)
lib: memcopy & string use glibc version
scheduler: update BFQ-v7r4 to BFQ-v7r5 for 3.4.0
drivers: usb: Use Android device as USB keyboard/mouse
USB KEYBOARD/MOUSE: added on/off trigger to driver
v1.2 [01-Sept-2014]
ramdisk :
synapse: Network: WiFi Power Mode controls
kernel :
BCMDHD4354: WIFI PM support for KitKat driver
BCMDHD4354: WIFI: POWERSUSPEND support
sched: cpu_power: enable ARCH_POWER
v1.1 [31-August-2014]
ramdisk :
init.rc: added some more boot defaults
synapse: new PowerSuspend controls: (enabled Hybrid as default)
kernel :
kernel/power/powersuspend: cumulative update to version 1.5
kernel/power/powersuspend: LCD screen on/off hooks
v1.0 [27-August-2014]
ramdisk :
default.prop: Possible Screen Mirroring / AllShare Cast fix (please give FULL report !!)
init.rc: added some more boot defaults
synapse: added to descriptions & general clean up
synapse: PowerSuspend: (enabled by default)
added dynamic Fsync control (disabled by default)
moved Dynamic Dirty Page Writeback controls
added Adaptive VFS Cache Pressure on Suspend / Resume​
synapse: Battery: added Battery Scaling Calibration (fuel-gauge chip reset)
synapse: Reboot: added Clear Synapse Data button
kernel :
fs/dyn_sync_cntrl: dynamic Fsync control v1.5
fs/dcache.c: adaptive vfs_cache_pressure on suspend / resume
fs/aio.c: Asynchronous I/O latency to a solid-state disk greatly increased
enabled AIO
kernel: sched: LOAD_FREQ (4*HZ+61) avoids loadavg Moire
config: set default TCP Westwood+ -- remembered at last
Dynamic read-ahead (1024 kB for 16 GB partition)
block: add FIOPS I/O scheduler
block: deadline: tweaks
Optimize for non-rotational
allow 0ms deadline latency, increase the read speed​
Initial v0.9 release [22-August-2014]
All source and ramdisk mods synced with T700/705 build
INSTALLATION
Watch >> THIS <<
Uninstall any CPU control apps, tweaks and scripts etc.
Recommend: Install Wanam DVFS disabler for greater kernel control
Recommend: Backup your current kernel with TWRP Recovery
Recommend: Install Synapse app from Google Play and rate it ☆☆☆☆☆ !!
If Synapse app is installed and using with any current kernel: device settings > applications > synapse > FORCE STOP & CLEAR DATA
Flash with CWM or TWRP Recovery
After boot (wait at least 60-120 secs)
Open Synapse
Tap "Understood"
Make any change, and tap the "" to apply new defaults
After setting and applying any GPU freq changes, don't forget to tap [Apply GPU Governor Settings] in Synapse GPU section
Any issues, please check Posts #1-3 and search the thread BEFORE posting
DOWNLOAD
10.5" TF800 WIFI EXYNOS
>> WIFI SkyHigh T800 WIFI kernel <<
STOCK T800 WIFI T800ZSU1ANL1 kernel (Flashing Stock will wipe your WiFi setings !)
---------------------------------------------------------------------------------------------------
10.5" TF805 LTE EXYNOS
>> LTE SkyHigh T805 LTE kernel <<
STOCK T805 LTE T805XXU1AOA1 kernel (Flashing Stock will wipe your WiFi setings !)
SOURCE
>> github <<
.

HELP & FAQ
HELP & FAQ
PLEASE POST QUESTIONS THAT ARE NOT DEVELOPMENT RELATED IN Q&A HERE. THIS WILL HELP KEEP THINGS TIDY
BEFORE POSTING, ENSURE YOU READ POSTS #1-3 AND SEARCH THREAD FOR INFO FIRST. THANK YOU FOR YOUR ASSISTANCE
BUGS
[Q] Duplicate proc/last_kmsg files
[A] Doesn't appear to affect anything, looking into it - apparently only from v0.8 and up
[Q] Synapse: AUDIO: HP equalizer does not work
[A] Toggle the control switch off > apply > on > apply >then it works
[Q] GPU Qos has this error:
[A] Don't worry, it wont hurt, and will only show if GPU freq 100 MHz is not in use. If you set 100 MHz and restart synapse, control will be available without error.
{
"lightbox_close": "Close",
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
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AUDIO
If you don't like the sound:
open synapse app
AUDIO: set all SP equalizer settings to zero
disable SP equalizer
apply
"SYNAPSE BOOT CANCELLED"
Wait for the kernel to stabilize and device to cool
Open synapse app
Synapse app menu > select all globally > undo > apply
Re-boot
If still issues > try again after #1
Still issues > Manually set config after boot (open synapse app > syanapse app menu > settings > disable apply on boot)
ISSUES
DO NOT POST ANY BUG REPORTS REGARDING SOD, FREEZE or REBOOT WHERE YOU (USER) HAS CHANGED ANY VOLTAGE OR FREQUENCY FROM DEFAULT !!
Uninstall any CPU control apps, tweaks and scripts etc.
Install Wanam DVFS disabler for greater kernel control
Flash kernel
Boot and allow things to stabilize
Open Synapse & tap :
"understood" message about unstable boot
"select all globally"
"undo" button
"apply"
make any change
"apply"
Reboot and ensure "synapse boot completed" toast message
You should be good to go
BOOT-LOOP
Power off & let device cool
Wipe cache & dalvik-cache in recovery (if custom recovery)
Re-flash kernel
Re-boot
Let things stabilize and cool before touching anything
BETTER BATTERY LIFE
There are no best settings. User "HABIT" is #1 cause of battery drain, followed by screen, ROM & apps, modem etc
This kernel is built to be balanced with a good mix of battery whilst keeping performance
Decrease screen brightness
Use dark wallpapers and app themes
Check your wakelocks with better battery stats app & use Greenify app to stop unwanted apps self starting and running in the background
Suggest:
CPU GOV: governor = ondemand (tweaked for power efficient workqueues)
CPU FREQ: 200 > 1900 MHz (-25 mV for all)
Synapse: CPU MULTICORE: Hotplug CPU UP boost = 30 %
GPU: 100 > 480 MHz (-50 mV for all) (100 MHz may induce some GUI sluggishness)
GPU: Midgard Power policy control = coarse_demand
GPU: Midgard Power policy threshold control = Battery (may induce some GUI sluggishness)
PowerSuspend Driver = Enable
MEMORY: Dynamic FSync = Enable
MEMORY: Dirty Page Writeback = Enable
CPU Multicore Power Saving = (2) Agressive
BETTER PERFORMANCE
DO NOT POST ANY BUG REPORTS REGARDING SOD, FREEZE or REBOOT WHERE YOU (USER) HAS CHANGED ANY VOLATGE OR FREQUENCY FROM DEFAULT !!
Disable DVFS with [APP][Android 4.0+][DVFS Disabler]
Warmer device under heavy load, but within the safe CPU temp of 95 degC
Synapse: CPU FREQ: 500 > 2000 MHz (2100 not stable for some devices)
Synapse: CPU MULTICORE: Power Efficient WQ = disabled
Synapse: CPU GOV: use Interactve governor
Synapse: GPU: set Midgard Power policy threshold profile to Ondemand or Performance. This will scale your GPU up/down faster at the expensive of battery life compared to Battery profile.
Synapse: GPU: GPU max freq = 533 MHz (more if your device is stable)
Synapse: MEMORY: UKSM = enabled
Synapse: ADVANCED: LMK profile = aggressive
GPU THESHOLD CONTROL
Set Midgard Power policy threshold profile (This determine how your GPU freq scales up/down):
Battery = battery friendly
Ondemand = Good all-round mix
Performance = A little agressive
Method:
Ensure you apply [] any changes to MIN / MAX GPU freq or GPU GOV Threshold profile
PRESS THE "Apply GPU GOV SETTINGS" button !!
Settings will be applied immediately and auto set on every boot.
HOW TO BACKUP YOUR STOCK KERNEL BEFORE FLASHING SkyHigh KERNEL
Boot into TWRP Recovery
Select Backup
Select "[X] Boot" only (boot.img/kernel)
Select Storage > Micro SD (if external sdcard installed) > OK
Swipe to backup
CAN I USE OTHER KERNEL CONTROL APPS
No, many features and options won't be available. Remove all other control apps to avoid conflicts !
Synapse is the recommended and has everything you need
HOW TO MONITOR LIVE CPU & GPU VALUES
CPU load & freq - available RAM - GPU freq - CPU temp - most resource intensive process
[APP][2.1+] Cool Tool
Download my personal cooltool_presets > unzip & copy folder to INTERNAL sdcard. If you have cool tool app already running, you must disable > overwrite existing folder > enable
LITTLE CORE CPU FREQUENCY
Real frequency is apparently double that reported by other apps
Example: min 200 MHz (real) in Synapse is reported as 100 MHz in SetCPU
RANDOM REBOOT
Don't UV or UC CPU or GPU
Use SkyHigh defaults
DOWNLOAD LINK NOT WORKING
I want to keep this project all in one place (Thanks to XDA) - ☆☆ NO MIRRORS ☆☆
Please try again in a few minutes
POOR CPU/GPU BENCHMARK or GRAPHICS PERFORMANCE
Allow the device to cool. Repetitive testing will heat the device hardware and invoke thermal throttling and lead to decreased benchmark.
HIGH CPU/GPU OC >> excessive heat >> thermal throttling >> reduced clock frequency >> DECREASE PERFORMANCE
DO NOT KILL PROCESSES
This feature allows the user to define processes and system processes white-lists filled with the preferred process names and to not be killed by lowmemorykiller, unless it is absolutely necessary.
When a the lowmemorykiller needs to free ram, it will first kill the processes not included inside the two process name lists chosen by the user.
If there are no more standard killable processes, then it will be necessary to kill one of the processes included inside one of the two white-lists, to prevent system hangs, slowdowns, etc.
You can find the [SkyHigh/Synapse] folder on your internal sdcard and add one process name per line. Lists updated on reboot.
Max 25 processes
Example only:
Code:
com.ea.games_r3_row
com.quoord.tapatalkxdapre.activity
DYNAMIC MANAGEMENT OF DIRTY PAGE WRITEBACKS
* [Christopher83]
This feature allows to have two different intervals for dirty page
writebacks and to dynamically manage them when the system has been
resumed (it's active) or when has been suspended.
Three new procfs parameters are exposed inside /proc/sys/vm path:
- dynamic_dirty_writeback is the activation status of this feature,
set 1 to enable it, set 0 to disable it and use the standard behaviour
- dirty_writeback_active_centisecs is the interval for the dirty page
writebacks when the system is active (screen on)
- dirty_writeback_suspend_centisecs is the interval for the dirty page
writebacks when the system is suspended (screen off)
This feature is in part inspired on Francisco Franco's patch:
https://github.com/franciscofranco/mako/commit/34d79548cf16b69c7d0154836018e7f258a22947
Click to expand...
Click to collapse
BACKUP & RESTORE
If the backup isn't visible, reboot device and ensure for have "synapse boot completed" message. Otherwise synapse won't read the file.
Reboot after applying your new settings
Read "ISSUES" & "SYNAPSE BOOT CANCELLED" above
TCP/IP NETWORK SECURITY
* Thanks to zeppelinrox & V6SuperCharger
Hardening the TCP/IP stack to SYN attack
Bump up tw_buckets in case we get DoS'd
Ignore pings
Don't cache connection metrics from previous connection
Don't pass traffic between networks or act as a router
Enable spoofing protection (turn on reverse packet filtering)
Don't accept source routing
Don't accept redirects
- Further reading:
http://www.cyberciti.biz/faq/linux-kernel-etcsysctl-conf-security-hardening
http://www.symantec.com/connect/articles/hardening-tcpip-stack-syn-attacks
SEGMENTATION FAULT
I don't believe it's kernel related, but rather busybox
Try uninstall your ROM busybox with this app. https://play.google.com/store/apps/details?id=stericson.busybox and reboot.
Re-flash kernel
Use the busybox that comes with the kernel located in /sbin
Also try to update your SuperSu and su binary if it asks and reboot.
USB KEYBOARD / MOUSE
Base project: https://github.com/pelya/android-keyboard-gadget
Required app: USB KEYBOARD
For best results, enable & use Hacker's Keyboard
Steps:
Ensure device USB debugging
Connect device to system via USB cable
Enable in Synapse > USB > USB Keyboard / Mouse >> Enable & apply
Start USB KEYBOARD app
BATTERY SCALING CALIBRATION - FUEL GAUGE RESET
Tap [Fuel-Gauge reset] in synapse BATTERY section
Reboot device
Battery % "reporting" calibration (digital)
a) Deplete battery to 5-10% (NOT ZERO)
b) Charge UNINTERUPTED until FULL (don't touch)
c) Unplug and then use normally. Device should then re-calibrate itself
..

v0.9 release
Initial T805 LTE kernel v0.9 is officially released !!
Thanks to @619619 for the test :good:
Please read carefully Posts #1-3 BEFORE doing anything. A lot of additional info can can found by searching
T800 WIFI Users:
I would like to build your kernel using T800ZCU1ANG2 ramdisk. I require the stock boot.img from this firmware. Without it, I won't biuld it.
Cheers,
UITA
.

UpInTheAir said:
Initial T805 LTE kernel v0.9 is officially released !!
Thanks to @619619 for the test :good:
Please read carefully Posts #1-3 BEFORE doing anything. A lot of additional info can can found by searching
T800 WIFI Users:
I would like to build your kernel using T800ZCU1ANG2 ramdisk. I require the stock boot.img from this firmware. Without it, I won't biuld it.
Cheers,
UITA
.
Click to expand...
Click to collapse
PFA the stock NG2 kernel for the 10.5 WIFI

UpInTheAir said:
Initial T805 LTE kernel v0.9 is officially released !!
Thanks to @619619 for the test :good:
Please read carefully Posts #1-3 BEFORE doing anything. A lot of additional info can can found by searching
T800 WIFI Users:
I would like to build your kernel using T800ZCU1ANG2 ramdisk. I require the stock boot.img from this firmware. Without it, I won't biuld it.
Cheers,
UITA
.
Click to expand...
Click to collapse
Cheers
Inviato dal mio SM-N9005 utilizzando Tapatalk

** T805 kernel RECALL **
Please wait for re-upload, minor error in init.rc

v0.9 released for all models & re-uploaded T805 kernel
R3_v0.9 kernel is now released for supported 10.5" models
* re-uploaded T805 LTE kernel - fixed minor mistake
* T800 WIFI R3_v0.9 is untested. Please let me know how it goes........ I have added flashable Stock kernels in the Download section (if required).
For those on older ROM firmware, please upgrade or you might have issues that we can't reproduce. Otherwsie, stay with stock.
Ensure you flash the kernel for your device model !!
NOTE: commit credits are in source.
Further instructions in Synapse app & Posts #1-3
Enjoy :good:
Cheers,
UITA
.

thank you very much, I'm going to try it immediately

UpInTheAir said:
R3_v0.9 kernel is now released for supported 10.5" models
* re-uploaded T805 LTE kernel - fixed minor mistake
* T800 WIFI R3_v0.9 is untested. Please let me know how it goes........ I have added flashable Stock kernels in the Download section (if required).
For those on older ROM firmware, please upgrade or you might have issues that we can't reproduce. Otherwsie, stay with stock.
Ensure you flash the kernel for your device model !!
NOTE: commit credits are in source.
Further instructions in Synapse app & Posts #1-3
Enjoy :good:
Cheers,
UITA
.
Click to expand...
Click to collapse
Hi @UpInTheAir
I just had a small question you firmware is based on the ANG2. (CHN) right I had the ANFB. On a T800 wifi with stock rom I didn't like the other roms so far but I want to try your firmware not sure if flashing yours can break my tab . Do you had any subjections?
Thanks for sharing your work

WarLion said:
Hi @UpInTheAir
I just had a small question you firmware is based on the ANG2. (CHN) right I had the ANFB. On a T800 wifi with stock rom I didn't like the other roms so far but I want to try your firmware not sure if flashing yours can break my tab . Do you had any subjections?
Thanks for sharing your work
Click to expand...
Click to collapse
No, source is Japan.
The ramdisk is ANG2 from China.
I don't have a 10.5" device so can't really comment except try for yourself. If you're worried, just back up your data (titanium backup app) before hand along with boot.img for your device (TWRP) to exSdCard. The kernel may or may not work properly on older firmware such as FB etc. Up to user to try for yourself.

UpInTheAir said:
No, source is Japan.
The ramdisk is ANG2 from China.
I don't have a 10.5" device so can't really comment except try for yourself. If you're worried, just back up your data (titanium backup app) before hand along with boot.img for your device (TWRP) to exSdCard. The kernel may or may not work properly on older firmware such as FB etc. Up to user to try for yourself.
Click to expand...
Click to collapse
Thanks mate I will try tomorrow morning thanks

Hi
I tried it, and to be honest, I don't feel any improvement currently, I guess I need to use it some days to check.
I tried Antutu Benchmark, just to see... No matter settings I try in Synapse, default, or boosted CPU/GPU, results are lower with SkyHigh kernel.
~34500 with Stock Kernel
~33000/33500 with SkyHigh Kernel
Thank you

Orphee said:
Hi
I tried it, and to be honest, I don't feel any improvement currently, I guess I need to use it some days to check.
I tried Antutu Benchmark, just to see... No matter settings I try in Synapse, default, or boosted CPU/GPU, results are lower with SkyHigh kernel.
~34500 with Stock Kernel
~33000/33500 with SkyHigh Kernel
Thank you
Click to expand...
Click to collapse
You might need to read Post #3 again, and the last few pages of the 8.4" kernel thread regarding heat and throttling.
I have said before that we might need newer source and I can't do magic with that. My older firmware + SkyHigh kernel (older source) scored 36200 standard AnTuTu (edit: just with GPU OC) but I don't really care. I don't live for the benchmark, and I certainly don't see any negative impact on general use
There are other features to the kernel, and if they don't suit user needs, I've included the stock kernel for download
Other than that, we just need to wait to better firmware and source.

I did read the #3 post, don't worry I was not trashtalking
Of course I see there is other interesting features
Again, thank you for your work

Orphee said:
I did read the #3 post, don't worry I was not trashtalking
Of course I see there is other interesting features
Again, thank you for your work
Click to expand...
Click to collapse
I realize that, no worries Just edited previous post.....
This newer firmware just runs hotter with older & newer kernel source. Throttling is induced earlier > decreased benchmark performance. Maybe a newer ROM or kernel source will help, time will tell.

UpInTheAir said:
[KERNEL] [SM-T800 WIFI & T805 LTE] [22 August] SkyHigh TW Kernel [R3_v0.9] [Synapse ++]
10.5" SM-T800 WIFI & T805 LTE TW Exynos 5420 supported in thread only !!
I don't have time to build for any more devices I can't personally test & debug - sorry.
Click to expand...
Click to collapse
can you please port this kernel to SM T520 Tab pro 10.1? they are pretty similar in hardware.

CodeIndia said:
can you please port this kernel to SM T520 Tab pro 10.1? they are pretty similar in hardware.
Click to expand...
Click to collapse
I don't have the time or desire to expand on the commitments I have already (particularly for yet another device I don't use). There is no "porting", but would need complete build and patch from source for your own hardware .......

Using this kernel with ThunderRom800. Antutu of 34907 without doing any tweaking!

Subsonic44 said:
Using this kernel with ThunderRom800. Antutu of 34907 without doing any tweaking!
Click to expand...
Click to collapse
Might be an update towards end of week. Just testing ATM and trying to get final Synapse controls just right.

with this setup, my friends are falling in love with my N5

UBER SaberMod 4.10 8/31
LiquidSmooth 8/10 nightly
heavy xposed user, so no ART
and the following uber_v1.2.cfg
#UberKernelConfig
##UBER.CFG v1.2.0
##MERGED WITH @janres155 SCRIPTS AND EDITED BY @janres155
##Inspired by ElementalX Kernel.cfg
###BLANK VALUES ARE NOT APPLIED
# ===================================================================================
# 0. CHANGELOG
# ===================================================================================
# - Optimal and sync freq have been removed due the potential to cause errors
# on unsupported govs.
# - Rewite, including several variable name changes resulting in a version bumb.
# ===================================================================================
# 1. BOOT SETTINGS
# ===================================================================================
# 1.1 KERNEL SWITCH
# =============================================
# - Enables or disables the use of the config for kernel configuration.
# (NOTE: Turn this OFF if you want to use other methods in configuring the kernel.)
# - Options are: 1 for ON and 0 for OFF
ENABLED=1
# =============================================
# 1.2 GRACE TIME
# =============================================
# - Adds a grace time after boot before changes are applied to prevent errors
# and to not interfere during boot.
# (NOTE: If settings doesn't stick or are not applied, increase grace time to 30.)
# - Default Grace Time: 10 (seconds)
GRACE_TIME=10
# =============================================
# 1.3 WAIT TIMERS
# =============================================
# - Adds time between changing settings to prevent errors.
# - Default Wait Timers: 0.5 (seconds)
WAIT_TIMERS=0.5
# =============================================
# 1.4 FILE SYSTEM TRIM
# =============================================
# - Fstrim is used on a mounted filesystem to discard (or "trim") blocks which
# are not in use by the filesystem.
# - Trims /cache and /data partitions on boot.
# - Options are: 1 for ON and 0 for OFF
FSTRIM=1
# ===================================================================================
# 2. CPU SETTINGS
# ===================================================================================
# =============================================
# 2.1 CPU SETTINGS SWITCH
# =============================================
# - Enables or disables modification to ALL the CPU Settings.
# - Options are: 1 for ON and 0 for OFF
CPU_SWITCH=1
# =============================================
# 2.2 CPU FREQUENCY SCALING
# =============================================
# =====================================
# 2.2.1 CPU FREQUENCY SWITCH
# =====================================
# - Enables or disables modification to ALL the CPU Frequency Settings.
# - Options are: 1 for ON and 0 for OFF
CPU_FREQ_SWITCH=1
# =====================================
# CPU FREQUENCY TABLE (for REFERENCE)
# =====================================
# UC--- 96000 | 1497600
# UC--- 192000 | 1574400
# UC--- 249600 | 1728000
# 300000 | 1958400
# 422400 | 2265600
# 652800 | 2419200 ---OC
# 729600 | 2572800 ---OC
# 883200 | 2726400 ---OC
# 960000 | 2803200 ---OC
# 1036800 | 2880000 ---OC
# 1190400 | 3014400 ---OC
# 1267200 |
# =====================================
# 2.2.2 CPU MAX FREQUENCY
# =====================================
# - Sets the maximum frequency the CPU scales up to.
# - Default Maximum: 2265600
CPU_MAX=2419200
# =====================================
# 2.2.3 CPU MIN FREQUENCY
# =====================================
# - Sets the minimum frequency the CPU scales down to.
# - Default Minimum: 300000
CPU_MIN=300000
# =============================================
# 2.3 CPU GOVERNOR
# =============================================
# =====================================
# 2.3.1 CPU GOVERNOR SWITCH
# =====================================
# - Enables or disables modification to ALL the CPU Governor Settings.
# - Options are: 1 for ON and 0 for OFF
CPU_GOV_SWITCH=1
# =====================================
# 2.3.2 CPU GOVERNORS
# =====================================
# - Sets the governor to be used.
# - CPU Governor determines how the CPU behaves in reponse to changes in workload.
# - If enabled, options are:
# intellidemand | intelliactive | adaptive
# lionheart | abyssplugv2 | nightmare
# ondemandplus | badass | wheatley
# hyper | lazy | pegasusq
# danceDance | darkness | optimax
# uberdemand | conservative | interactive
# adaptive | powersave | smartmax
# smartmax_eps | userspace | ondemand
# performance
# - Default governor: ondemand
CPU_GOV=lionheart
# =============================================
# 2.4 CPU MULTICORE POWER SAVING
# =============================================
# - Try to group tasks into the least cores possible.
# - Options are:
# 0 - disable
# 1 - enable
# 2 - aggressive
CPU_MC_POWERSAVINGS=2
# ===================================================================================
# 3. CPU VOLTAGE SETTINGS
# ===================================================================================
# - Enables the increase or decrease of the CPU Voltages.
# (NOTE: Decreasing voltages will lower heat and power consumption of the CPU.
# Increasing it on overclocked frequencies improves stability.)
# WARNING: Too low voltages may cause instability and freezes.
# - Options are:
# 25 - Overvolt by 25 | -25 - Undervolt by 25
# 50 - Overvolt by 50 | -50 - Undervolt by 50
CPU_VOLT=0
# ===================================================================================
# 4. HOTPLUG SETTINGS
# ===================================================================================
# =============================================
# 4.1 MPDECISION SWITCH
# =============================================
# - Enables or disables the use of show-p1984's msm_mpdecision.
# - This is a in-kernel replacement for Qualcomm's hotplug binary.
# - Options are: 1 for ON and 0 for OFF
MPDEC_SWITCH=1
# ==========================================
# 4.1.1 MPDECISION SCREEN-OFF MAX FREQUENCY
# ==========================================
# - Sets the maximum frequency attainable when the screen is off.
# - Options are: Use the CPU FREQUENCY TABLE at section 2.1.1.
# (NOTE: Settings this to low values, such 300000, can cause distortions
# when listening to music.)
# - Default value: 1190400
MPDEC_SCROFF_MAX_FREQ=1190400
# ==========================================
# 4.1.2 MPDECISION SCREEN-OFF SINGLE CORE
# ==========================================
# - Toggle for allowing single core only mode when screen is off.
# - Options are: 1 for ON and 0 for OFF
MPDEC_SCROFF_SINGLE_CORE=1
# ==========================================
# 4.1.3 MPDECISION TOUCHBOOST
# ==========================================
# - Temporarily boost CPU frequencies when screen is touched.
# - Options are: 1 for ON and 0 for OFF
MPDEC_TOUCHBOOST=0
# ==========================================
# 4.1.4 MPDECISION MAX CPUS
# ==========================================
# - Maximum number of cores allowed to online.
# - Options are:
# 1 - One core only | 3 - Three cores only
# 2 - Two cores only | 4 - Allow all cores
MPDEC_MAX_CORE=4
# ==========================================
# 4.1.5 MPDECISION HOTPLUG CONTROL
# ==========================================
# - Controls how MPDECISION hotplug cores
# - Options are:
# 0 - Slow hotplugging of cores
# 1 - Default hotplugging of cores
# 2 - Fast hotplugging of cores
# 3 - CUSTOM, USE advanced.cfg
MPDEC_HOTPLUG=1
# ==========================================
# 4.1.6 MPDECISION UNPLUG CONTROL
# ==========================================
# - Controls how MPDECISION unplug cores
# - Options are:
# 0 - Slow unplugging of cores
# 1 - Default unplugging of cores
# 2 - Fast unplugging of cores
# 3 - CUSTOM, USE advanced.cfg
MPDEC_UNPLUG=1
# ===================================================================================
# 5. I/O SETTINGS
# ===================================================================================
# =============================================
# 5.1 I/O SCHEDULER
# =============================================
# - I/O schedulers decides how to prioritize and handle I/O requests.
# - I/O schedulers can have many purposes depending on the
# goal of the I/O scheduler, some common goals are:
# To minimize time wasted by hard disk seeks.
# To prioritize a certain processes' I/O requests.
# To give a share of the disk bandwidth to each running process.
# To guarantee that certain requests will be issued before a particular deadline.
# - Options are:
# bfq | noop
# cfq | row
# deadline | sio
# fifo | vr
# fiops | zen
# - Default I/O Scheduler: bfq
IO_SCHEDULER=bfq
# =============================================
# 5.2 I/O READ SPEED
# =============================================
# - Maximum number of kilobytes to read-ahead for the file-system
# - Default value: 1024
IO_READAHEAD=1024
# =============================================
# 5.3 I/O READ SPEED FOR SD CARD
# =============================================
# - Maximum number of kilobytes to read-ahead for the SD card
# - Default value: 1024
IO_SD_READAHEAD=1024
# ===================================================================================
# 6. GPU SETTINGS
# ===================================================================================
# =============================================
# 6.1 GPU SETTINGS SWITCH
# =============================================
# - Enables or disables modification to ALL the GPU Settings.
# - Options are: 1 for ON and 0 for OFF
GPU_SWITCH=1
# =============================================
# 6.2 GPU FREQUENCY SCALING
# =============================================
# =====================================
# GPU FREQUENCY TABLE (for REFERENCE)
# =====================================
# 650000000 -> 650 MHz ---OC
# 533333000 -> 533 MHz ---OC
# 450000000 -> 450 MHz
# 389000000 -> 389 MHz
# 320000000 -> 320 MHz
# 200000000 -> 200 MHz
# 100000000 -> 100 MHz
# =====================================
# 6.2.1 GPU MAX FREQUENCY
# =====================================
# - Sets the maximum frequency the GPU scales up to.
# - Default Maximum: 450000000
GPU_MAX=450000000
# =====================================
# 6.2.2 GPU MIN FREQUENCY
# =====================================
# - Sets the minimum frequency the GPU scales down to.
# - Default Minimum: 200000000
GPU_MIN=200000000
# =============================================
# 6.3 GPU GOVERNOR
# =============================================
# =====================================
# 6.3.1 GPU GOVERNORS
# =====================================
# - Enables or disables the GPU Performance Governor.
# (WARNING: Only use this governor for benchmarking purposes.)
# - Options are: 1 for ON and 0 for OFF
GPU_PERFORMANCE=0
# =====================================
# 6.3.2 GPU UP THRESHOLD
# =====================================
# - Adjusts the threshold to ramp up GPU frequencies.
# - Default GPU up threshold: 50
GPU_UP=50
# =====================================
# 6.3.3 GPU DOWN THRESHOLD
# =====================================
# - Adjusts the threshold to ramp down GPU frequencies.
# - Default GPU down threshold: 25
GPU_DOWN=25
# ===================================================================================
# 7. GAMMA SETTINGS
# ===================================================================================
# =============================================
# 7.1 GAMMA PRESET
# =============================================
# - Enables or disables Chet's gamma profile.
# - Options are: 1 for ON and 0 for STOCK
GAMMA_PRESET=1
# =============================================
# 7.2 BACKLIGHT DIMMER
# =============================================
# =====================================
# 7.2.1 BACKLIGHT DIMMER SWITCH
# =====================================
# - Allows you to adjust the LCD screen brightness lower than is possible
# with stock.
# - Options are: 1 for ON and 0 for OFF
BDM_SWITCH=1
# =====================================
# 7.2.2 MINIMUM BRIGHTNESS
# =====================================
# - Sets Minimum Backlight: Range 1 - 100
# - Default value: 5
BDM_MIN=5
# ===================================================================================
# 8. SOUND SETTINGS
# ===================================================================================
# =============================================
# 8.1 SOUND ENGINE
# =============================================
# - Specify which sound engine is included with the kernel.
# NOTE 1: UberKernel specifies which sound engine is included in the kernel.
# NOTE 2: FAUX AND FRANCO WILL ONLY WORK WITH THE RIGHT KERNEL
# - Options are:
# franco | faux | stock
SOUND_ENGINE=faux
# =============================================
# 8.2 FRANCO SOUND SETTINGS
# =============================================
# =====================================
# 8.2.1 FRANCO MIC INPUT LEVEL
# =====================================
# - Controls the mic input levels
FRANCO_MIC=1
# =====================================
# 8.2.2 FRANCO CALL OUTPUT LEVEL
# =====================================
# - Controls the call output levels
FRANCO_CALL=2
# =====================================
# 8.2.3 FRANCO SPEAKER OUTPUT LEVEL
# =====================================
# - Controls the loud speaker output levels
FRANCO_SPEAKER=2
# =====================================
# 8.2.4 FRANCO HEADPHONE OUTPUT LEVEL
# =====================================
# - Controls the Headphones output levels
FRANCO_VOLUME=1
# =============================================
# 8.3 FAUX SOUND SETTINGS
# =============================================
# =====================================
# 8.3.1 FAUX MIC INPUT LEVEL
# =====================================
# - Controls the mic input levels
# - Default value: 0
FAUX_MIC=0
# =====================================
# 8.3.2 FAUX MIC INPUT LEVEL FOR CAM
# =====================================
# - Controls the camera mic input levels
# - Default value: 1
FAUX_CAM=1
# =====================================
# 8.3.3 FAUX SPEAKER OUTPUT LEVEL
# =====================================
# - Controls the loud speaker output levels
# - Default value: 254
FAUX_SPEAKER=254
# =====================================
# 8.3.4 FAUX HEADPHONE OUTPUT LEVEL
# =====================================
# - Controls the Headphones output levels
# - Default value: 254
FAUX_HEAD=254
# =====================================
# 8.3.5 FAUX POWER AMP LEVEL
# =====================================
# - Controls the Headphones output levels (Lower = LOUDER)
# - Default value: 33
FAUX_POW=33
# =====================================
# 8.3.6 FAUX LOCK
# =====================================
# - Prevents system from resetting to stock if it freaks out
# - Default value: 1
FAUX_LOCK=1
# ===================================================================================
# 9. MEMORY SETTINGS
# ===================================================================================
# =============================================
# 9.1 ZRAM SETTINGS
# =============================================
# =====================================
# 9.1.1 ZRAM SWITCH
# =====================================
# - Compresses ram to speed up read and write speeds when
# a device doesn't have enough ram of its own. (Can slow
# down devices with a lot of ram)
# - Options are: 1 for ON and 0 for OFF
ZRAM_SWITCH=1
# =====================================
# 9.1.2 ZRAM COMPRESSION
# =====================================
# - ZRAM compression algorithm to be used. LZ4 is currently the fastest.
# - Options are: lz4 | lzo
ZRAM_COMPRESSION=lz4
# =====================================
# 9.1.3 ZRAM DISK SIZE (MB)
# =====================================
# - Size of your virtual compressed memory drive.
# - Options are: 256 | 512 | 1024
ZRAM_DISKSIZE=512
# =============================================
# 9.2 VIRTUAL MACHINE SETTINGS
# =============================================
# =====================================
# 9.2.1 SWAPPINESS
# =====================================
# - This control is used to define how aggressive the kernel will swap
# memory pages. Higher values will increase agressiveness, lower values
# decrease the amount of swap. A value of 0 instructs the kernel not to
# initiate swap until the amount of free and file-backed pages is less
# than the high water mark in a zone.
# (NOTE:This also affect how aggressive ZRAM will work.)
# - Swappiness range: 1 - 100
# - Default swappiness: 60
SWAPPINESS=10
# =====================================
# 9.2.2 DIRTY RATIO
# =====================================
# - Contains, as a percentage of total available memory that contains free
# pages and reclaimable pages, the number of pages at which a process which
# is generating disk writes will itself start writing out dirty data. The
# total available memory is not equal to total system memory.
# - Default dirty ratio: 20
DIRTY_RATIO=20
# =====================================
# 9.2.3 DIRTY BACKGROUND RATIO
# =====================================
# - Contains, as a percentage of total available memory that contains free pages
# and reclaimable pages, the number of pages at which the background kernel
# flusher threads will start writing out dirty data. The total avaiable memory
# is not equal to total system memory.
# - Default dirty background ratio: 5
DIRTY_BACKGROUND_RATIO=40
# =====================================
# 9.2.4 DROP CACHES
# =====================================
# - Dropping caches will force rebuild of file system cache based on actual
# app usage rather than boot/startup processes.
# - Use value of 3 for best file system read/write performance or you can
# try something in between.
# - The drop_caches command valid values are:
# 0 - default
# 1 - free pagecache
# 2 - free dentries, inodes
# 3 - free pagecache, dentries, inodes
DROP_CACHES=3
# =====================================
# 9.2.5 FS WRITEBACK DELAY MODE
# =====================================
# - This command delays auto fs writebacks or file system bits cached in
# RAM while Screen is ON. Enable this feature for better performance.
# - Note this adds a slight risk of possible data loss if you phone crashes
# while screen is on.
# - Options are: 1 for ON and 0 for OFF
FS_DELAY=1
# =============================================
# 9.3 KERNEL SAMEPAGE MERGING
# =============================================
# - KSM decreases memory usage by sharing identical memory pages amongst different
# processes.
# - Options are: 1 for ON and 0 for OFF
KSM=1
# ===================================================================================
# 10. WAKE SETTINGS
# ===================================================================================
# =============================================
# 10.1 WAKE CONTROL SWITCH
# =============================================
# - Enables or Disables Modifying the Wake Control Settings.
# - Options are: 1 for ON and 0 for OFF
WAKE_CONTROLS=1
# =============================================
# 10.2 DOUBLE TAP TO WAKE
# =============================================
# - Double Tap on the screen to wake up the device.
# - Options are:
# 0 - Disable
# 1 - BOTTOM half of screen
# 2 - FULL screen
DT2W=0
# =============================================
# 10.3 SWEEP TO WAKE/SLEEP
# =============================================
# - Swipe across the nav bar to sleep/wake
# - Options are:
# 0 - Disable
# 1 - Sweep To Wake and Sweep to Sleep
# 2 - Sweep To Sleep Only
S2WS=0
# =============================================
# 10.4 POWER KEY SUSPEND
# =============================================
# - To stop wake controls when screen is turned off by power key
# - Options are: 1 for ON and 0 for OFF
PWRKEY=0
# =============================================
# 10.5 WAKE TIMEOUT
# =============================================
# - Stop wake controls after screen is left off for some time.
# - Options are: time (in seconds)
TIMEOUT=0
# ===================================================================================
# 11. MISCELLANEOUS SETTINGS
# ===================================================================================
# =============================================
# 11.1 TCP CONGESTION CONTROL
# =============================================
# - Sets the algorithm of internet congestion avoidance, to
# possibly improve speeds and load times.
# - Options are:
# - bic | cubic | highspeed | htcp | hybla | illinois | lp
# - reno | scalable | vegas | veno | yeah | westwood
TCP=veno
# =============================================
# 11.2 DYNAMIC FSYNC
# =============================================
# - If enabled, this will defer the sync operations of the filesystem while screen
# is on, which can improve the device performace. When the screen is off, a flush is
# called to synchronize all outstanding writes keeping your data safe.
# - Read more from here: http://forum.xda-developers.com/galaxy-s3/orig-development/thread-closed-t1949904/post33731930
# - Options are: 1 for ON and 0 for OFF
DYNAMIC_FSYNC=1
# =============================================
# 11.3 POWER SUSPEND
# =============================================
# - Power suspend is a new Kernel Power Management Driver which replaces the
# deprecated Early Suspend PM driver for older Android/Kernel combinations.
# - It has several modes. Userspace mode allows user to control power suspend
# on/off manually. All other modes, the power suspend is controlled by kernel
# automatically.
# - Recommended On for better battery savings while screen is off.
# - Options are:
# 0 - AUTOSLEEP | 2 - LCD_PANEL
# 1 - USERSPACE | 3 - HYBRID
POWER_SUSPEND=1
# =============================================
# 11.4 VIBRATION INTENSITY
# =============================================
# - Adjusts the vibration intensity
# - Default vibration intensity: 63
VIB=100
# =============================================
# 11.5 USB FAST CHARGE
# =============================================
# =====================================
# 11.5.1 FAST CHARGE SWITCH
# =====================================
# - If enabled, device will charge faster when connected through USB.
# NOTE: Enabling this will disable access to phone storage via USB.
# - Options are:
# 0 - OFF
# 1 - ON
# 2 - CUSTOM (set FC_LEVEL below)
FAST_CHARGE=2
# =====================================
# 11.5.2 FAST CHARGE LEVEL
# =====================================
# - Fast charge voltage configuration.
# - WARNING: Incorrect use of voltage can damage your phone or USB ports
# - Options are (in mA):
# 500 | 900 | 1200 | 1500 | 2000
# - Recommended voltage configuration:
# 500 as MAX for USB 2.0
# 900 as MAX for USB 3.0
# 1500 as MAX for Wall Charger
FC_LEVEL=1500
# =============================================
# 11.6 BATTERY LIFE EXTENDER
# =============================================
# - It is used to set a limit for the capacity to which the battery will be charged,
# preventing the battery to wear out fast.
# - Currently not working correctly from what I've heard for this device.
# - Default Value: 97
BLX=100
# ===================================================================================
# 12. MODULES
# ===================================================================================
# =============================================
# 12.1 FRANDOM
# =============================================
# - Frandom is a Linux kernel random number generator, which is 10-50 times
# faster than what you get from Linux' built-in /dev/urandom. And it uses very
# little (/dev/frandom) or none (/dev/erandom) of the kernel's entropy pool, so
# it is very useful for applications that require a handy source for lots of
# random data. Read more @ http://billauer.co.il/frandom.html
# - Options are: 1 for ON and 0 for OFF
FRANDOM=1
# =============================================
# 12.2 EXFAT
# =============================================
# - This module is used to read/access mass storages that are formatted in ExFAT
# - Options are: 1 for ON and 0 for OFF
EXFAT=0

You make my N5 lag with that post

How to use frandom? Can u explain

ccab said:
You make my N5 lag with that post
Click to expand...
Click to collapse
+1
Sent from my Nexus 5 using Tapatalk

Can you post that cfg into a file and attache it?
Sent from my Nexus 5 using Tapatalk

um, good for you? to me that setup is lacking very much, and/or includes too much just junk. looks like your friends dont know much.

simms22 said:
um, good for you? to me that setup is lacking very much, and/or includes too much just junk. looks like your friends dont know much.
Click to expand...
Click to collapse
That's the .cfg file for the Uber kernel. It includes all the configurables. It looks like he's using the default values except for the CPU governor.

Wakamatsu said:
That's the .cfg file for the Uber kernel. It includes all the configurables. It looks like he's using the default values except for the CPU governor.
Click to expand...
Click to collapse
lol

Next time just upload the .cfg txt file, not a copy pasta -_-

Wow dat post such worthless many stupid.

That hurt my eyes and head! Mama Mia!!

Serious lag looking through this lol

What exactly is the point of this thread???
Not everyone is going to run what you have on your phone and a lot of people use ART.
All I see is OP looking for imaginary internet points for his post..
Useless post is useless.
Benchmark thread here: http://forum.xda-developers.com/showthread.php?p=47004928
Battery thread here http://forum.xda-developers.com/showthread.php?p=47053220
Use the above thread to post this.
Don't create another thread simply because your friends "fell in love" with your set up.
And please use this thread http://forum.xda-developers.com/showthread.php?p=49133262 if you want to post random crap no one cares about.

Umm congrats?

"With this faboulouss setup aLL me and my silly sailor friendsss jusst abssolutely are infatuated with what i dids to my Nexuss 5. Ya silly ssailors!"

Woooooopyyyyyyy
Sent from my Nexus 5 using XDA Free mobile app

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Seen as the config is basically the exact same as original there is no need for this thread, as others mentioned in future post your config instead.
Thread closed