Messages in this thread | | | Date | Sun, 20 May 2007 17:29:03 +0100 | From | Miguel Figueiredo <> | Subject | Re: Sched - graphic smoothness under load - cfs-v13 sd-0.48 |
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Bill Davidsen wrote: > I generated a table of results from the latest glitch1 script, using an > HTML postprocessor I not *quite* ready to foist on the word. In any case > it has some numbers for frames per second, fairness of the processor > time allocated to the compute bound processes which generate a lot of > other screen activity for X, and my subjective comments on how smooth it > looked and felt. > > The chart is at http://www.tmr.com/~davidsen/sched_smooth_01.html for > your viewing pleasure. The only "tuned" result was with sd, since what I > observed was so bad using the default settings. If any scheduler > developers would like me to try other tunings or new versions let me know. >
As I tryied myself kernels 2.6.21, 2.6.21-cfs-v13, and 2.6.21-ck2 on the same machine i found *very* odd those numbers you posted, so i tested myself those kernels to see the numbers I get instead of talking about the usage of kernel xpto feels like.
I did run glxgears with kernels 2.6.21, 2.6.21-cfs-v13 and 2.6.21-ck2 inside Debian's GNOME environment. The hardware is an AMD Sempron64 3.0 GHz, 1 GB RAM, Nvidia 6800XT. Average and standard deviation from the gathered data:
* 2.6.21: average = 11251.1; stdev = 0.172 * 2.6.21-cfs-v13: average = 11242.8; stdev = 0.033 * 2.6.21-ck2: average = 11257.8; stdev = 0.067
Keep in mind those numbers don't mean anything we all know glxgears is not a benchmark, their purpose is only to be used as comparison under the same conditions.
One odd thing i noticed, with 2.6.21-cfs-v13 the gnome's time applet in the bar skipped some minutes (e.g. 16:23 -> 16:25) several times.
The data is available on: http://www.debianPT.org/~elmig/pool/kernel/20070520/
How did you get your data? I am affraid your data it's wrong, there's no such big difference between the schedulers...
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Com os melhores cumprimentos/Best regards,
Miguel Figueiredo http://www.DebianPT.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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