[KERNEL] BFS Scheduler for Mik CM7 | RELEASED

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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.

Originally Posted by mik_os

I didn't used BFS because if strange perdomance issues in GB. If this one is ok I maybe try to use it.

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...el-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.

Originally Posted by mik_os

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.

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! :P

Originally Posted by mik_os

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.

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

Originally Posted by DookMatt

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!

if its unsigned, do i need to sign it before flashing?
if yes, how?

Originally Posted by dongimin2

if its unsigned, do i need to sign it before flashing?
if yes, how?

no you dont need to. but you will have to uncheck the option "toggle verify signature" in the recovery. thats all