[Q] What Is CFS and BFS - LG Optimus Black

i saw this cfs and bfs thing on a korean forum and can anyone explain to me what is cfs and bfs ?

Those are schedulers. Look it up, how about using search?
http://ck.kolivas.org/patches/bfs/bfs-faq.txt

thank you NOOBY !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1111

but what is cfs ?

Use the search or google it.. man it's not always us in charge of giving information to you, it s also up to you, to do some research...
Sent from my LG-P970 using Tapatalk

ok . but there doesn't seem to be anything useful that google gives me when i search . thank you anyway

google + read

Zaihanzainal said:
read
Click to expand...
Click to collapse
So, CFS is same thing as CFQ ? and BFS same thing as BFQ ?
I'm asking cause on the link you gave there is nothing related to BFS/CFS only to BFQ/CFQ

Might be helpful i hope :
http://www.stackednotion.com/blog/2010/06/04/what-are-bfs-and-cfs/
See also :
http://en.wikipedia.org/wiki/Brain_Fuck_Scheduler Love the name
http://en.wikipedia.org/wiki/Completely_Fair_Scheduler

verszipo said:
So, CFS is same thing as CFQ ? and BFS same thing as BFQ ?
I'm asking cause on the link you gave there is nothing related to BFS/CFS only to BFQ/CFQ
Click to expand...
Click to collapse
sorry my mistake... posted wrong link.... updated link =P
and although they are both task/ io schedulers they are not the same....
actually the links nooby & pondera posted is VERY good for understanding what they are.....

Related

[KERNEL] BFS Scheduler for Mik CM7 | RELEASED

I downloaded mik kernel from his git repo and I patched it to add BFS Scheduler (0.404 patch works very well) and to set smartass governor to default.
I use it on CM7 Beta 6.5.2 and it works!
DOWNLOAD: http://www.multiupload.com/917W030Y00
EDIT: ZIP file is unsigned!
What is BFS scheduler used for and how does that help CM7 6.5.2 apart from setting default governor, Waiting for the patch, Thanks.
bfs - performance wise
cfs - multi tasking wise
i hope tun.ko from mik' s rom can be on this kernel since the tun.ko on mik's,rom is not updated, openvpn is not working, and i need it badly
Sent from my LG-P500 using Tapatalk
I didn't used BFS because of strange perfomance issues in GB. If this one is ok I maybe try to use it.
About tun.ko: in 6.5.2 it has been built directly in kernel, but I don't have openvpn to test it.
mik_os said:
I didn't used BFS because if strange perdomance issues in GB. If this one is ok I maybe try to use it.
Click to expand...
Click to collapse
Yeah there was an issue with dynticks and low CONFIG_HZ (phones were affected since they shouldn't really go above 100); it should have been fixed in bfs 404 I've been using it since your 6.5.2 release and no issues have arose (and no groundbreaking performance improvements either).
@cmangalos: actually, CFS is the default kernel scheduler, and is therefore supposed to be very scalable (i.e. works well enough on machines ranging from 1 to thousands of (logical) cpus), while BFS uses a different approach which privileges user interaction and minimizes latency (hence *theorically* improving system responsiveness), at the cost of lower throughput.
for anyone interesting here's an enlightening read: http://www.cs.unm.edu/~eschulte/data/bfs-v-cfs_groves-knockel-schulte.pdf
A.
Indeed! I've tried with higher CONFIG_HZ but nothing good came off it, but in my desktop HZ as 1000 is a good boost.
mik_os said:
I didn't used BFS because if strange perdomance issues in GB. If this one is ok I maybe try to use it.
About tun.ko: in 6.5.2 it has been built directly in kernel, but I don't have openvpn to test it.
Click to expand...
Click to collapse
With 0.404 there aren't bugs... if you want, you can release a new version with CFS and a version with BFS... or maybe you can release flash zip kernel! Or maybe i can do it for you!
mik_os said:
I didn't used BFS because if strange perdomance issues in GB. If this one is ok I maybe try to use it.
About tun.ko: in 6.5.2 it has been built directly in kernel, but I don't have openvpn to test it.
Click to expand...
Click to collapse
im always using openvpn, and when i started to use cm7 roms, tun.kos are always not compatible with the kernel, if you want mik, i can give you servers, username and pw, and use openvpn setting app found in market
Sent from my LG-P500 using Tapatalk
DookMatt said:
I downloaded mik kernel from his git repo and I patched it to add BFS Scheduler (0.404 patch works very well) and to set smartass governor to default.
I use it on CM7 Beta 6.5.2 and it works!
DOWNLOAD: http://www.multiupload.com/917W030Y00
EDIT: ZIP file is unsigned!
Click to expand...
Click to collapse
if its unsigned, do i need to sign it before flashing?
if yes, how?
dongimin2 said:
if its unsigned, do i need to sign it before flashing?
if yes, how?
Click to expand...
Click to collapse
no you dont need to. but you will have to uncheck the option "toggle verify signature" in the recovery. thats all
Works great can't test wifi right now but everything else works, good benchmark scores (not very high Oc 245/768 performance kp beyond that ). Testing it further.
Sent from my LG-P500 using XDA Premium App
Do I have to wipe something before flashing?
kovidd said:
Do I have to wipe something before flashing?
Click to expand...
Click to collapse
Not necessary .. but you can wipe dalvic cache.
Sent from my LG-P500 using XDA Premium App
i wonder if its working with open optimus rom v1.148?????????
gkalenis said:
i wonder if its working with open optimus rom v1.148?????????
Click to expand...
Click to collapse
before you wonder, read some posts/threads about the optimus series and kernel variants
Even though BFS has nice loading times and boot times , it sucks in video playback . Just tested it and it shocked me at how many times it would stutter
Zerobarat1 said:
Even though BFS has nice loading times and boot times , it sucks in video playback . Just tested it and it shocked me at how many times it would stutter
Click to expand...
Click to collapse
stutter must not be come with the bfs ... it can have more reasons i think.
Zerobarat1 said:
Even though BFS has nice loading times and boot times , it sucks in video playback . Just tested it and it shocked me at how many times it would stutter
Click to expand...
Click to collapse
I don't get any stutter its all butter smooth. Will test further though.
Sent from my LG-P500 using XDA Premium App
@DookMatt, is it possible to create a kernel that enable blink like void?
heiszakee said:
@DookMatt, is it possible to create a kernel that enable blink like void?
Click to expand...
Click to collapse
blink is an app. "Missed message flasher free"

rcmix vivo on cm 7.1 o_O

So kquicksall released yet another rcmix kernel and I figured just for something to do i'd try it on cm...
Surprisingly enough it runs really well, and everything works fine.
On smoothass governor it runs just as well as tiamat did but seems to have even better battery.
Here it is in case anyone was wondering!
www.multiupload.com/5O7XCAYV3P
does it run on arhd?
baste07 said:
does it run on arhd?
Click to expand...
Click to collapse
it should. Otherwise you can always just flash the old kernel back no problem
do you have a change log perhaps?
you said there's a new governor? smoothass? what prevous governor does it compare to?
baste07 said:
do you have a change log perhaps?
you said there's a new governor? smoothass? what prevous governor does it compare to?
Click to expand...
Click to collapse
it reminds me of smartassv2
thanks! installed it already, booted up fine. not sure what the changes are though hehe
i'll see in a day or two.
is smartassV2 better than ondemand?
Here is some governors explained http://www.acsyndicate.net/which-cpu-governor-should-you-go-with/
Sent from my Incredible S using XDA App
thanks! i've now set my awake governor to smoothass
Weird... i thought that Kquicksall rcmix Kernel didn't work on a AOSP Rom!
Will try it tomorrow.
jkolner said:
Weird... i thought that Kquicksall rcmix Kernel didn't work on a AOSP Rom!
Will try it tomorrow.
Click to expand...
Click to collapse
I assumed the same, just thought it was worth a shot.
could you give the MD5 checksum, i cant reach the link.
get another instead, Thanks
Here are all the RCmix Vivo Kernels:
https://www.dropbox.com/s/b7cvmjy71pagq39/Kernels/HTC_Incredible_klquicksall

[Final Rom] Froyo 2.2.1 CyanogenMod 6 | 2.6.32.49 Kernel by mikegapinski

All the details are posted there:
http://mikegapinski.androidus.xaa.pl/android-2-2-1-cyanogenmod-6-final/
Screens:
That is stable, finished rom - ready to be your primary one Sure it is the fastest now
will test for sure
in the same moment, i have search a very good 2.2 rom for my gt540, and now, you posted it <3
sry, for my bad english
can`t wait to test D
Mike, does it have SIO? The I/O score in quadrant is kind of low.
No, bcos this is my kernel with zice fixes. Again appropriated job...
Wow, cm6 with new kernel. Nice..
Tnx
Sent using Tt.
pcfighter said:
No, bcos this is my kernel with zice fixes. Again appropriated job...
Click to expand...
Click to collapse
You get full credit on Mike's website
Sent from my LG GT540 Swift
The credits for kernel are bolded on my website so I see no problems at all I just updated your kernel to .49, resy is yours. I can see what I can do about SIO, now I use BFQ
pcfighter said:
No, bcos this is my kernel with zice fixes. Again appropriated job...
Click to expand...
Click to collapse
Your kernel had very good I/O performance, maybe it doesn't even need SIO. I'll test it as it is (without SIO) and report. I usually benchmark with performance profile set on, I don't know what profile mike used. It's quite important.
In one line - zice, on the down of text me. I told many times, mine with zice fixes.
Again, you inserted it after my reminder.
Stop maiking problems man ... that make's no sense
Download link is there:
http://mikegapinski.androidus.xaa.pl/android-2-2-1-cyanogenmod-6-final/
As before, no mirrors - I will make them soon
pcfighter said:
In one line - zice, on the down of text me. I told many times, mine with zice fixes.
Again, you inserted it after my reminder.
Click to expand...
Click to collapse
PCF: You are a LEGENDARY DEV!!
Everybody in this forum (LG GT540) knows who are you, knows your hard work and knows about your wonderful roms!!
Mike: Thanks man!! Will try later
This hosting is absolutely ****. Download speed hardly ever rises above 10KB/s, and all downloads seem to fail even before the 10% mark. Can someone please PM me a mirror for this rom? I would appreciate one for CM9 beta 4 as well. Thanks.
nutterbg said:
This hosting is absolutely ****. Download speed hardly ever rises above 10KB/s, and all downloads seem to fail even before the 10% mark. Can someone please PM me a mirror for this rom? I would appreciate one for CM9 beta 4 as well. Thanks.
Click to expand...
Click to collapse
+1, eta download 2h...
Sent using Tt.
nutterbg said:
This hosting is absolutely ****. Download speed hardly ever rises above 10KB/s, and all downloads seem to fail even before the 10% mark. Can someone please PM me a mirror for this rom? I would appreciate one for CM9 beta 4 as well. Thanks.
Click to expand...
Click to collapse
lol 60kb/s (and past the 10%)
I will make hotfile mirror in the morning ... I am removing the current mirror bcos I found a stupid thing inside ... The reuploaded ver will be on MY 35 kernel - I wanna to get rid of all this pepole on twitter
very fast and clean !
but wlan says error?
and yeah, google maps/navigation in android market!!
I said that I found an error ... old dhcpcd in /bin ...

[Kernel]FrankenKernel

I made this kernel for my own use.
Decided to share it.
My reason for making this kernel is because I have been trying kernel after kernel and have not been able to stay on a single one.
Every time my main issue was that the phone would get uncomfortably hot, the only kernel that wouldn't was always @showp1984's kernel with his 3-phase thermal. At first I was enjoying it until I saw all these other kernels getting updated with new features so I decided to update showps kernel, it wasn't a big update but it still suffered from the SODs caused by his in-kernel mpdecision (which I'd prefer over Qualcomm's) so I decided to just grab my next favorite kernel and update it with thermal. I've been testing it for a few days and haven't had it get as hot as it used to so I'm happy with it. I'm not a developer I just wanted something for me. It has the same features as @Faux123's kernel which include...
-Dynamic FSync
-Eco Mode
-Turn MPDecision on/off
-OC up to 1.8GHz
-UV to 700000mV
-Sweep2Wake
-Fast Charge
-Veno/Reno/Bic/Cubic/Westwood+/HTCP
-GPU OC up to 487MHz
-3 phase thermal
-FIOPS/NOOP/DEADLINE/ROW/CFQ/SIO schedulers
-compiled with the latest Linaro toolchain O2 optimized
-its also hard coded with moles' colors that everyone is raving about (they are good though thats why i included them)
I personally like using Kernel Tuner which allows modifying the 3 phase thermal parameters.
Hope you guys enjoy it.
New release method:
Each release will have a folder, in the folder will be a kernel with hardcoded values from Molesarecoming. I'll just use the most popular few because id rather not wait a few mins uploading each kernel from my phone :l
February 8, 2013
http://www.mediafire.com/?3t5vz8t21m2wl
About the source:
It took me a few hours to download each repository (faux123 and showp) since im tethering off my phone (which is faster to download than upload with TMo speeds) , so i haven't uploaded the source. I can probably upload the patches (a lot smaller in size) which can be applied to Fauxs source thus producing this same kernel
Glad i was trying my hand at git, still such a noob but i was able to figure something out. Sorry if it isn't proper :l
https://github.com/jassycliq/mako
so this is based on faux's kernel?
Yes, it is up to date with his github source.
and i'm assuming BLUEHOLO color tweak?
What do you mean? I posted everything that I included, nothing more nothing less
jassycliq said:
What do you mean? I posted everything that I included, nothing more nothing less
Click to expand...
Click to collapse
He's talking about PA color... lol That's what everyone is talking about lately...
Did you replace the mpdecision ? i didn't quite understand the op
meangreenie said:
Did you replace the mpdecision ? i didn't quite understand the op
Click to expand...
Click to collapse
No, I previously had compiled a kernel that replaced Qualcomm's proprietary mpdecision with showps in-kernel mpdecision but it would cause SODs so i decided against it.
It still uses Qualcomms mpdecision but just like Faux123's kernel you can turn it off and use intelli_plug.
jarjar124 said:
He's talking about PA color... lol That's what everyone is talking about lately...
Click to expand...
Click to collapse
yes, its in OP.
jassycliq said:
yes, its in OP.
Click to expand...
Click to collapse
molesarecoming color tweak has different revisions, his latest release is called BLUEHOLO. I didnt know which one you implemented.
Sent from my Blenzderz 9000
---------- Post added at 07:54 PM ---------- Previous post was at 07:52 PM ----------
scratch that.. latest one is now 4th rev halfbreed
Can you link me? I had recently checked in their github and didn't see anything new.
jassycliq said:
Can you link me? I had recently checked in their github and didn't see anything new.
Click to expand...
Click to collapse
Link
Updated
reboot, reboot, reboot, reboot and more with the update. I have AOKP Official
AW: [Kernel]FrankenKernel
You need to flash the rest kernel from faux( you find it in faux thread opener) than Franken Kernel, this will work for me.
Nexus 4 Tapatalk
Wow. This kernel is packed with features. I just flashed it now. I'll report back with battery in a day. Nice job!
Sent from my Nexus 4 using xda premium
will test and report back
what settings do you recommend ? any governor over the others ?
CheesyNutz said:
will test and report back
what settings do you recommend ? any governor over the others ?
Click to expand...
Click to collapse
I like ondemand and intellidemand governors. I/O I like is sio. I would also recommend UC'ing to 1113MHz.
Sent from my Nexus 4 using xda premium
android88 said:
I like ondemand and intellidemand governors. I/O I like is sio. I would also recommend UC'ing to 113MHz.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
thanks im still new to the quadcore .... do i set all cores to the same gov ? or what

[Kernel] CopyCat-Kernel [v4]

Hey guys,
Ive modified the Stock CyanogenMod kernel with some of the features i cant live without This is not a replacement for iodak or werewolf, play etc this is just my own little project. As the name implies, im simply taking some of my favorite features from the various kernels here while attempting to keep it as close to stock as possible
Latest Version: CCK4.1
25/02
http://forum.xda-developers.com/showpost.php?p=50605034&postcount=99
Older Versions:
CCK4
http://forum.xda-developers.com/showpost.php?p=50392624&postcount=60
So far it has:
# Fast-Charge (faster usb port chargers)
# Additional CPU governors ( wheatley, HYPER, lulzactiive and smartassV2 )
# CPUQuiet
# Unlinked GPU / CPU
And more!
As above all thanks goes original devs mainly Demetris, iodak and laufersteppenwolf,
The usual disclaimer, I do a bit of testing to make sure of basic stability, but even if its stable on my device it might not be on yours. im not responsible for damages etc etc
Heres the Download: https://www.dropbox.com/s/dl94bdksmcdexr8/CCK04.zip
Source: https://github.com/JoinTheRealms/lge-kernel-p880/tree/cm-10.2
Great work
Sent from my Optimus 4X HD using Tapatalk
when you're bored, could you please repack it as anykernel? thanks, this type of kernel is basically what i need as well.
Many thanks will try it now
Gesendet von meinem LG-P880 mit Tapatalk
Can you please repack it for stock rom ?
Sent from my LG-P880 using Tapatalk
Please repack it for Vanir 4.3.1 Thank you so much !!!!
I dont understand. When i flash this kernel using cm10.2 i get android phone and design fc Oo
I thought its the cm10.2 ramdisk
Gesendet von meinem LG-P880 mit Tapatalk
Yes. I flashed too in Vanir and in first boot i had intensive infinite vibration .. reboot . Re-read all Apps and Error FC,com.android,etc. I must reflash Vanir . [sorry for bad english]
JoinTheRealms said:
Hey guys,
Ive quickly modified the Stock CyanogenMod kernel with some of the features i cant live without This is not a replacement for iodak or werewolf, play etc this is just my own little project. As the name implies, im simply taking some of my favorite features from the various kernels here while attempting to keep it as close to stock as possible
So far it has:
# Fast-Charge (faster usb port chargers)
# Additional CPU governors ( wheatley, HYPER and smartassV2 )
# CPUQuiet
# GPU max 560 MHz
# Unlinked GPU / CPU
*GPU and CPU are not overclockable in userspace*
As above all thanks goes original devs mainly Demetris, iodak and laufersteppenwolf,
The usual disclaimer, its so far only been alive for one night so ive done little testing, but its stable on my device it might not be on yours.
Heres the link: https://www.dropbox.com/s/2sfszuls70xpv3w/CCK-test-009.zip (10.2 ramdisk, i can pack it into anykernel if desired.)
Source: https://github.com/JoinTheRealms/lge-kernel-p880/tree/cm-10.2
Click to expand...
Click to collapse
Want me to add to my repacks seen as people are having issues? Or do you want to do the fixing/repacks yourself?
penguin449 said:
Want me to add to my repacks seen as people are having issues? Or do you want to do the fixing/repacks yourself?
Click to expand...
Click to collapse
Can you made a anykernel repack for Vanir ? :angel:
DarkFantasy6 said:
I dont understand. When i flash this kernel using cm10.2 i get android phone and design fc Oo
I thought its the cm10.2 ramdisk
Gesendet von meinem LG-P880 mit Tapatalk
Click to expand...
Click to collapse
Oh sorry Im using an omnirom 4.3 ramdisk which is behind the cm10.2 one, anykernel version on the way
devilozzo said:
Yes. I flashed too in Vanir and in first boot i had intensive infinite vibration .. reboot . Re-read all Apps and Error FC,com.android,etc. I must reflash Vanir . [sorry for bad english]
Click to expand...
Click to collapse
As above.
penguin449 said:
Want me to add to my repacks seen as people are having issues? Or do you want to do the fixing/repacks yourself?
Click to expand...
Click to collapse
If you can be bothered ill most likely push some more updates today though.
devilozzo said:
Can you made a anykernel repack for Vanir ? :angel:
Click to expand...
Click to collapse
As above.
AnyKernel version in OP
Thank you. Flashed. Testing on Vanir 27/11/2013...
EDIT: 1° Impression _ CPU Load ver very low. CPU Quite in balanced very usefull for battery with 1 or max 2 processor . Userspace for 4 cores. Max Mhz to 1500 no OC to 1700. Now i charged phone to 100% and i will test it with BBS for tonight. For now,with ONLY check with TricksterModDonate it's SUPERB !
Only one suggestion for future: Add WESTWOOD TCP CONGESTION . It's the best.
EDIT 2: Problems with connection 3G/2G for internet ... no connection and check in loop to reconnect but nothing ... Rebooted 2 times but similar problem ...
devilozzo said:
Thank you. Flashed. Testing on Vanir 27/11/2013...
EDIT: 1° Impression _ CPU Load ver very low. CPU Quite in balanced very usefull for battery with 1 or max 2 processor . Userspace for 4 cores. Max Mhz to 1500 no OC to 1700. Now i charged phone to 100% and i will test it with BBS for tonight. For now,with ONLY check with TricksterModDonate it's SUPERB !
Only one suggestion for future: Add WESTWOOD TCP CONGESTION . It's the best.
Click to expand...
Click to collapse
Thanks, i will add, also some more IO schedulers
devilozzo said:
EDIT 2: Problems with connection 3G/2G for internet ... no connection and check in loop to reconnect but nothing ... Rebooted 2 times but similar problem ...
Click to expand...
Click to collapse
Can anyone else confirm? I dont have data at the moment so i cant test
For now i must return to MoKee AnyKernel for internet problem . For Governor: SmartAssv2 on balanced set 1 core to max frequency, always. Is that the real function ? I hope that problem,of internet connection, can be resolved because for first impression CopyCat is very very interesting.
devilozzo said:
For now i must return to MoKee AnyKernel for internet problem . For Governor: SmartAssv2 on balanced set 1 core to max frequency, always. Is that the real function ? I hope that problem,of internet connection, can be resolved because for first impression CopyCat is very very interesting.
Click to expand...
Click to collapse
Nope your right there is data issues, not sure why
also, only userspace & balanced? no runnable? (just checking if it's intended)
Flying_Bear said:
also, only userspace & balanced? no runnable? (just checking if it's intended)
Click to expand...
Click to collapse
It wasn't intentional but i much prefer balanced anyway i might add runnable in the future
Is anyone having issues downloading from the play store?
JoinTheRealms said:
It wasn't intentional but i much prefer balanced anyway
Click to expand...
Click to collapse
OT: +1
Sent from my LG Optimus 4X HD

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