Messages in this thread | | | Date | Sun, 22 Apr 2007 15:07:25 +0200 | From | Willy Tarreau <> | Subject | Re: [ck] Re: [ANNOUNCE] Staircase Deadline cpu scheduler version 0.45 |
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On Sun, Apr 22, 2007 at 10:18:32PM +1000, Con Kolivas wrote: > On Sunday 22 April 2007 21:42, Con Kolivas wrote: > > Willy I'm still investigating the idle time and fluctuating load as a separate > issue.
OK.
> Is it possible the multiple ocbench processes are naturally > synchronising and desynchronising and choosing to sleep and/or run at the > same time?
I don't think so. They're independant processes, and I insist on reducing their X work in order to ensure they don't get perturbated by external factor. Their work consist in looping 250 ms and waiting 750 ms, then displaying a new progress line.
> I can remove the idle time entirely by running ocbench at nice 19 > which means they are all forced to run at basically the same time by the > scheduler.
It may indicate some special handling of nice ?
> Anyway the more important part is... Can you test this patch please? Dump > all the other patches I sent you post 045. Michael, if you could test too > please?
OK, I will restart from fresh 0.45 and try again.
Regards, Willy
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