[MPlayer-users] a kernel compile
realnc at arcor.de
Sat Jan 10 07:13:32 CET 2009
> Nick Koretsky wrote:
>> For ati it should be "does -vo gl/gl2 work for you?" If not, play with Xorg,
>> drivers, mesa etc until it works. And, generally, stay away from ati if you
>> are using linux....
> -vo gl /gl2 works well, though there is a high amount of blurring in
> motion scenes. -vo xv produces tearing and flickering.
> I could swap the card with a nvidia 9600GT. I went with the ati because
> the fonts were more readable. I should note this is my first experience
> with a 2.6 kernel which is why I was looking for some advice on cflags
> and /proc and such. Tweaks and things I can do to the kernel to maybe
> speed things up for mplayer, as it will be the primary use for this box.
"I've heard" that for multimedia, you should build a kernel with a
1000Hz timer and make it preemptible. I never benchmarked this
(wouldn't even know how), but here the steps to get an "optimized"
multimedia, low-latency kernel:
Disable "Optimize for size"
Disable "Control Group support"
Disable "Group CPU scheduler"
Processor type and features:
Enable "Tickless System (Dynamic Ticks)"
Enable "High Resolution Timer Support"
Choose your CPU type in "Processor family"
Choose "Preemptible Kernel (Low-Latency Desktop)" as "Preemption Model"
Choose "1000Hz" as "Timer frequency"
Then build and boot it and check on whether it made a difference or not.
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