LinHES

Feature #574

update kernel package to 2.6.32 (when it gets released) - speed increases in multicpu scheduling

Added by graysky over 14 years ago. Updated over 13 years ago.

Status:

Closed

Start date:

Priority:

Normal

Due date:

01/10/2011

Assignee:

cecil

% Done:

100%

Category:

Kernel

Spent time:

Target version:

7.1

Description

When 2.6.32 gets released (currently 2.6.32-rc6), please add it to LinHES. There have been some significant improvements in the scheduler as it applies to multi-core CPUs. These are adventagous to users who transcode their mpg-2 to x264. In some cases, increases of 80 % have been reported. I have seen an increase in over 50 % on my X3360 encoding x264.

Example encoding a 1280x720, 60 fps MPEG-2 clip under various kernels on my Arch box:

Linux (kernel 2.6.31.5): avg 15.99 fps
Linux (kernel 2.6.32-rc6): avg 24.45 fps
Linux (kernel 2.6.31-bfs): avg 24.49 fps

53 % faster w/ the new kernel which is on par with Con Kolivas' brain fuck scheduler (bfs)! Also, CPU usage while encoding goes up to 99-100 % on all four cores now. Before it would rest around 70-80 %.

References and related discussions:

http://x264dev.multimedia.cx/?p=185

http://bbs.archlinux.org/viewtopic.php?id=83957

Related issues

related to LinHES - Feature #647: Update major core componets

Closed

03/18/2010

01/10/2011

Associated revisions

Revision 905a9563
Added by jams over 13 years ago

kernel26: update to 2.6.36
closes #574
ref #647

Revision 55365f93
Added by jams over 13 years ago

lirc: update to 0.8.7
ref #574
ref #647
closes #599

Revision a493a7b5
Added by jams over 13 years ago

lirc-utils: update to 0.8.7
ref #574
ref #647
ref #599

Revision cb48b42b
Added by jams over 13 years ago

madwifi: recompile and update for new kernel

ref #574
ref #647

Revision 46a6e7ca
Added by jams over 13 years ago

ndiswrapper: recompile for new kernel .36
ref #574
ref #647

Revision 7d6646b5
Added by jams over 13 years ago

nvidia: update 260.19.12

ref #574
ref #647

Revision 2427eb4c
Added by jams over 13 years ago

nvidia-utils: update to 260.19.12
ref #574
ref #647

Revision b8bc491c
Added by jams over 13 years ago

tiacx: update and recompile for kernel .36
ref #574
ref #647

History

#1
Updated by cecil over 14 years ago

After 6.02 is released, we'll be working on 6.03. 6.03 will be a major upgrade. Not only will the kernel be upgraded but so will X and other items.

#2
Updated by stonewalker over 14 years ago

I know not Flyspray. John, do you have the ability to switch the "Due in Version" to 6.03.00 since you opened it?

#3
Updated by graysky over 14 years ago

@Don - nope, I think only the admins can do that. BTW, 2.6.32 went final yesterday.

http://kernel.org

#4
Updated by stonewalker over 14 years ago

Greatly improved encoding & transcoding is a good thing.
However, I don't see the BFS added to the mainline kernel tree. This would be another 'out of tree' patch to manage for LinHES. How many does LinHES carry already? Is it a big deal to add another one, or is it not?