Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [PATCH]O18.1int | Date | Sun, 24 Aug 2003 02:58:33 +1000 |
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On Sat, 23 Aug 2003 19:49, Nick Piggin wrote: > Andrew Morton wrote: > >We have a problem. See the this analysis from Steve Pratt.
> >Steve has done some preliminary testing which indicates that the > > volanomark and specjbb regressions are due to the CPU scheduler changes.
> >It might help if you or a buddy could get set up with volanomark on an > > OSDL 4-or-8-way so that you can more closely track the effect of your > > changes on such benchmarks.
Ok here goes. This is on 8way:
Test4: Average throughput = 11145 messages per second
Test4-O18.1: Average throughput = 9860 messages per second
Test3-mm3: Average throughput = 9788 messages per second
So I grabbed test3-mm3 and started peeling back the patches and found no change in throughput without _any_ of my Oxint patches applied, and just Ingo's A3 patch:
Test3-mm3-A3 Average throughput = 9889 messages per second
Then finally I removed that patch so there were no interactivity patches: Test3-mm3-ni Average throughput = 11052 messages per second
I performed each run 3 times and have the results and profiles posted here: http://kernel.kolivas.org/2.5/volano
wli suggested inlining sched_clock from A3 to see if that helped but at 3am I think it can wait. At least I've been able to track down the drop. Thanks zwane for the iron access.
Con
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