Am Montag, 14. Februar 2005 19:40 schrieb Roland Scheidegger:
> Dieter NÃtzel wrote:
> > This on is SOLVED!
> >
> > It was due to SuSE's CKRM_CPU_SCHEDULE scheduler.
> >
> > Back to Linux's 'normal' one solve it.
> >
> > quake3-smp
> > ~198 fps 2. high
> > ~193 fps HIGH
> >
> > 640x480 window on 1280x1024x24/32.
> >
> > 1024x768 window give ~100 fps, again.
>
> This is interesting, though. The use of a different scheduler should
> probably not have such a huge impact on performance (if no other cpu or
> io-heavy processes are running).
> Are you using pageflip? If no the r200CopyBuffer calls sched_yield()
> which potentially could cause such a difference. But if you're using
> pageflip I'm not sure why there would be such a drastic difference.

Try "latencytest0.42-png".

Especially have a look at "top" scheduler numbers.

-Dieter


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