Best kernel, I/O Scheduler and cpu governor for Jellybean? - Galaxy S I9000 Q&A, Help & Troubleshooting

I flashed the http://forum.xda-developers.com/showthread.php?t=2159519 SuperNexus kernel which is on version 4.2.2 Jellybean, and I'm liking it ^.^
Now, I was on ICS for quite a long time (too many unstable JB roms) and of course, the kernel I should use and the i/o scheduler and cpu governor changed, as I'm on jellybean now. I was using Devil with Smartassv2 and noop on ICS and it seemed to be working great. What kernel shall i flash for the supernexus? It comes with a cyanogen mod one which i don't like, and which i/o scheduler and cpu governor shall I use? Write below, with a reason.
Thanks!

No one, seriously?

You can try this. I'm using it and it's amazing:
http://forum.xda-developers.com/showthread.php?p=34895124
Sent from my GT-I9000

GrippingSphere said:
You can try this. I'm using it and it's amazing:
http://forum.xda-developers.com/showthread.php?p=34895124
Sent from my GT-I9000
Click to expand...
Click to collapse
I'll give it a shot! Oh, by the way, what I/O scheduler are you using and what CPU governor?

Related

io scheduler

How can i change io scheduler without an app(no frills cpu control)?
via root explorer maybe?
Thanks
Edit:Changed
Here is the solution http://forum.xda-developers.com/showthread.php?t=1473921
midomad said:
How can i change io scheduler without an app(no frills cpu control)?
via root explorer maybe?
Thanks
Click to expand...
Click to collapse
flash another unofficial cm7...in setting/cm/performance u will find it there ..
FaIzaL3040 said:
flash another unofficial cm7...in setting/cm/performance u will find it there ..
Click to expand...
Click to collapse
no this governor
i mean I/O Scheduler like sio noop...
midomad said:
no this governor
i mean I/O Scheduler like sio noop...
Click to expand...
Click to collapse
ITS kernel configuration..in cyanmobile squad have many option like that..
FaIzaL3040 said:
ITS kernel configuration..in cyanmobile squad have many option like that..
Click to expand...
Click to collapse
yes i know but i don't want to use cyanmobile
thanks anyway
midomad said:
yes i know but i don't want to use cyanmobile
thanks anyway
Click to expand...
Click to collapse
if you have CM, you can use setcpu or no frills to change the io scheduler but available io schedulers will depend on how the kernels were compiled. I just use the default which is sio..
kitrax59 said:
if you have CM, you can use setcpu or no frills to change the io scheduler but available io schedulers will depend on how the kernels were compiled. I just use the default which is sio..
Click to expand...
Click to collapse
i also have CM it have noop as scheduler
andreasf93 said:
I use CyanMobile options for that but never really understood any difference by changing IO scheduler :s
Sent from SGM using CyanMobile
Click to expand...
Click to collapse
read
http://forum.xda-developers.com/showthread.php?t=1558153

[KERNEL] vta2-kernel for Nexus S Jelly Bean #130

I built this kernel for my daily use, now i decided to share it here!
Work with Nexus World Wide Version (i9023/i9020t).
※ Basically it is made for Official Stock ROM (JRO03E/JZO54K). it may NOT work with other ROMs.
Not working with CyanogenMod!
Main features of this kernel:
1.25GHz
Based on Linux Kernel 3.0.73
Based on AOSP
Touchwake ADVANCED (allowing you wake up your phone by touching screen when you got a notification ) (based on Ezekeel's work)
10-point multitouch
Force AC charging by chad0989
UKSM (Ultra Kernel Samepage Merging)
MTP (thanks to bedalus and Krarvind!)
High Bigmem
BLN by Ezekeel
BLD by Ezekeel
Powerkey Presses Counter
init.d support
Optimized CRC32 algorithm
SLUB
Custom Voltage by Ezekeel
mount dalvik-cache to /cache
undervolted
RCU Boost
Voodoo by supercurio
included busybox
USB OTG v5 by sztupy Read this. (not sure if this work on Jelly Bean)
CRT-off animation fix from CyanogenMod team.
PM_FAST
...
Default: interactive / sio
Thanks to all contributors of this kernel!
And welcome to fork it on my github.
Download vta2-kernel / Changelog
TODO:
Bluetooth battery drain fix.
ROW I/O scheduler ( kernel module )
...
Any Suggestion? Tell me here
hi crt is fix ?
leap_ahead said:
hi crt is fix ?
Click to expand...
Click to collapse
yes.
Thanks for the share.. works great.
krfoy said:
I built this kernel for my daily use, now i decided to share it here!
Tested on my Nexus S i9023 and it should also works on i9020.
Main features of this kernel:
1.24GHz
Based on Linux Kernel 3.0.38
Based on AOSP
for Nexus S JRO03E stock ROM
Bigmem
Touchwake
BLN
BLD
init.d support
Optimized CRC32 algorithm
SLUB
Custom Voltage
mount dalvik-cache to /cache
undervolt
Deep Idle
RCU Boost
Voodoo
included busybox
USB OTG v5
FSync control
CRT-off animation fix from CyanogenMod team.
This kernel uses smartassV2 and SIO as default governor and I/O schedulers.
Thanks to all contributors of this kernel!
And welcome to fork it on my github.
Download vta2-kernel #11 here.
Click to expand...
Click to collapse
Can you make a version with also fast charge? Anyway working great
Inviato dal mio Nexus S con Tapatalk 2
I'd like to see more feedback about this kernel as it looks promising. Thank you
Sent from my Nexus S using xda app-developers app
Kernel is good.. snappy.. nice performance..
There is no 1000mhz on the clock, so it's always on 1.24ghz ..
Pls add interactive governor.. I can't change the governor, only shows smartassv2 ...
Battery life not gr8.. But runs well.. power hungry games are smooth.. good overall..
Sent from my Nexus S using xda app-developers app
spupuz said:
Can you make a version with also fast charge? Anyway working great
Inviato dal mio Nexus S con Tapatalk 2
Click to expand...
Click to collapse
may be included in next stable release.
siddhesh.raikar said:
Kernel is good.. snappy.. nice performance..
There is no 1000mhz on the clock, so it's always on 1.24ghz ..
Click to expand...
Click to collapse
This is inspired by SAMSUNG Infuse 4G, which use the same CPU and do not have 1.0GHz step in its stock kernel.
when there are both 1.24 and 1.0GHz, the governor will prefer to use 1.24GHz. And i thought it may help governor switch between steps faster.
so it won't eat more battery in this case.
siddhesh.raikar said:
Pls add interactive governor.. I can't change the governor, only shows smartassv2 ...
Click to expand...
Click to collapse
I only built smartassV2(tweaked) into kernel. because it balance between battery life and performance.
There are also include kernel module of ondemand and conservative, you could load them by insmod if you like.
Thank you very much and must try it .
krfoy said:
This is inspired by SAMSUNG Infuse 4G, which use the same CPU and do not have 1.0GHz step in its stock kernel.
when there are both 1.24 and 1.0GHz, the governor will prefer to use 1.24GHz. And i thought it may help governor switch between steps faster.
so it won't eat more battery in this case.
I only built smartassV2(tweaked) into kernel. because it balance between battery life and performance.
There are also include kernel module of ondemand and conservative, you could load them by insmod if you like.
Click to expand...
Click to collapse
Thanks... Pls try and include HighBigMem in the next version...
thanks for your kernel! i will try it now and report back
EDIT: unfortunately kernel doesn't work for me - i use it with paranoidandroid and rom was really sluggish at first (maybe cache-related...). then i startet setcpu for adjustments and the phone stopped responding with "colorful snow" on the screen. i pulled battery to reboot. - maybe my 9023 doesn't like 1,24 ghz (it is a bit picky, but 1,2 ghz at stock vol was never a problem).
invd said:
thanks for your kernel! i will try it now and report back
EDIT: unfortunately kernel doesn't work for me - i use it with paranoidandroid and rom was really sluggish at first (maybe cache-related...). then i startet setcpu for adjustments and the phone stopped responding with "colorful snow" on the screen. i pulled battery to reboot. - maybe my 9023 doesn't like 1,24 ghz (it is a bit picky, but 1,2 ghz at stock vol was never a problem).
Click to expand...
Click to collapse
Not so sluggish at my side.
invd said:
thanks for your kernel! i will try it now and report back
EDIT:i startet setcpu for adjustments and the phone stopped responding with "colorful snow" on the screen. i pulled battery to reboot. - maybe my 9023 doesn't like 1,24 ghz (it is a bit picky, but 1,2 ghz at stock vol was never a problem).
Click to expand...
Click to collapse
same here with nstools
@OP or @DaXmax: Is there anything I can do to help at finding the problem? logcat? or is it just my phone being picky?
Deep idle? Are u sure it's fully working?
Sent from my Nexus S using xda app-developers app
ioplkj13 said:
Deep idle? Are u sure it's fully working?
Sent from my Nexus S using xda app-developers app
Click to expand...
Click to collapse
Its working.
I may replace deep idle with CPUidle or IDLE2 by _thalamus in the future.
invd said:
@OP or @DaXmax: Is there anything I can do to help at finding the problem? logcat? or is it just my phone being picky?
Click to expand...
Click to collapse
try stock kernel or raise up voltage?
krfoy said:
try stock kernel or raise up voltage?
Click to expand...
Click to collapse
can you update OP with to do list feature that are you going to add?
krfoy said:
try stock kernel or raise up voltage?
Click to expand...
Click to collapse
yea, well, with stock kernel (and thalamus and matr1x and air kernel) everything runs fine, but i wanted to know, if there is a way to find out what exactly causes the problem with your kernel and my phone (which also might help somebody else). - raising the vol does not help that much, still some freezes from time to time (even though i'm above stock vols).

[Q] How to flash/Install new Governors and I/O Schedulers

Hi. I want to know if there's any way to flash new governors and I/O schedulers to my phone. I have a Sony Ericsson Xperia W8 (same as X8). I tried searching XDA as well googled it but couldn't find anything on this topic.
I am running Alfs kernel v09c with MiniCM7 2.2.2. It doesn't have Smartass H3 governor and Deadline Scheduler. Both are my favorites. I like this kernel as its very fast but doesn't have this governor and scheduler.
If there's a way to install/flash them kindly tell me and also provide the necessary links.
Thanks a lot

which is the best combination of ROM and kernal for gaming?

alot of ROMS present which one is best keeping in mind just pure gaming.....
ksguptalive said:
alot of ROMS present which one is best keeping in mind just pure gaming.....
Click to expand...
Click to collapse
Only one updated kernel we have is CoCore, so it is best one. ROM, maybe HarshJelly/SamiOS for stock, or some CM (I think CM10.1 is most stable of all we have for now).
I used thunderzap 4.1 with jellymod 4.1 and was pretty dissapointed cuz games were not smooth...I will try Roms u mentioned...
Sent from my GT-I9070 using xda app-developers app
ksguptalive said:
alot of ROMS present which one is best keeping in mind just pure gaming.....
Click to expand...
Click to collapse
IMO, i think the best rom for gaming is CM, u are free to try any verson of it.
I/O scheduler & CPU governer definitions?
Hi
Can someone please give me the definitions & the best combo of I/O scheduler and CPU governer? i don't understand what do they mean exactly.
Jesseccentric said:
Hi
Can someone please give me the definitions & the best combo of I/O scheduler and CPU governer? i don't understand what do they mean exactly.
Click to expand...
Click to collapse
Checkout this two threads:
- CPU Governors explained in detail
- Brief info on CPU Governors and I/Os

[Q] Best CPU Governor and I/O Combo

Hi everyone
I was wondering what is the best cpu and i/o combo
I am currently on Cyanogenmod 10.1 RC4 by bieltv.3
Max Cpu - 902 Mhz
Min Cpu - 245 Mhz
Governor - Smartass V2
I/O - Deadline
Any opinion guys???
Cyber_Dragon001 said:
Hi everyone
I was wondering what is the best cpu and i/o combo
I am currently on Cyanogenmod 10.1 RC4 by bieltv.3
Max Cpu - 902 Mhz
Min Cpu - 245 Mhz
Governor - Smartass V2
I/O - Deadline
Any opinion guys???
Click to expand...
Click to collapse
Overclocking can fry your cpu. My governor is smartassH3, frequency 245-800 MHz and I/O is sio. for SmartassH3, flash MA6 kernel by @Mardon. Btw just curious, why are you using an old version of cm10.1? there is a final version for cm10.1. here- http://jenkins.androidarmv6.org/job/android/602/
-BRK- said:
Overclocking can fry your cpu. My governor is smartassH3, frequency 245-800 MHz and I/O is sio. for SmartassH3, flash MA6 kernel by @Mardon. Btw just curious, why are you using an old version of cm10.1? there is a final version for cm10.1. here- http://jenkins.androidarmv6.org/job/android/602/
Click to expand...
Click to collapse
Thanks for your reply -BRK-, but im comfortable with 902mhz
I'm also confused whether i'll use sio or deadline I/O
Cyber_Dragon001 said:
Thanks for your reply -BRK-, but im comfortable with 902mhz
I'm also confused whether i'll use sio or deadline I/O
Click to expand...
Click to collapse
understanding them might help you decide. have a look-
http://forum.xda-developers.com/showthread.php?t=1558153
http://forum.xda-developers.com/showpost.php?p=15735266&postcount=2
-BRK- said:
understanding them might help you decide. have a look-
http://forum.xda-developers.com/showthread.php?t=1558153
http://forum.xda-developers.com/showpost.php?p=15735266&postcount=2
Click to expand...
Click to collapse
Ohhh... srry for being noob and all. It kept on rebooting after i set the clock to 902mhz
so i stick to your advice
Max-800mhz
Min-245mhz
Gov.-SmartassV2
I/O-sio

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