Re: [announce] [patch] Voluntary Kernel Preemption Patch

Con Kolivas
2004-07-10T15:12:53Z

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I've conducted some of the old fashioned Benno's latency test on this
patch in various sysctl configurations. This was done on top of a
different tree but everything else was kept static. I have to preface
these results by saying I don't really get the 50ms size latencies
normally but I'm usually unable to get better than 3ms so I wasn't sure
what to expect.

Only the both preempt off showed any "outlying" results with one spike
of ~20ms but the rest of the time being ~3ms. Enabling both forms of
preempt seemed to help a little but nothing drastic, and never below
1ms. It was not universal that the latencies were better, but there was
a trend towards better latency. I suspect that those who are getting
huge latencies may see a bigger change with this patch than I did.

http://ck.kolivas.org/latency/

Con

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