Re: Sched - graphic smoothness under load - cfs-v13 sd-0.48

Con Kolivas
2007-05-23T00:38:19Z

On Wednesday 23 May 2007 10:28, Bill Davidsen wrote:
> > kernel 2.6.21-cfs-v13 2.6.21-ck2
> > a) 194464 254669
> > b) 54159 124
>
> Everyone seems to like ck2, this makes it look as if the video display
> would be really pretty unusable. While sd-0.48 does show an occasional
> video glitch when watching video under heavy load, it's annoying rather
> than unusable.

That's because the whole premise of your benchmark relies on a workload that
yield()s itself to the eyeballs on most graphic card combinations when using
glxgears. Your test remains a test of sched_yield in the presence of your
workloads rather than anything else. If people like ck2 it's because in the
real world with real workloads it is better, rather than on a yield() based
benchmark. Repeatedly the reports are that 3d apps and games in normal usage
under -ck are better than mainline and cfs.

--
-ck