Messages in this thread | | | Subject | Re: question on sched-rt group allocation cap: sched_rt_runtime_us | From | Peter Zijlstra <> | Date | Mon, 07 Sep 2009 09:59:34 +0200 |
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On Sun, 2009-09-06 at 08:32 +0200, Mike Galbraith wrote: > On Sat, 2009-09-05 at 19:32 -0700, Ani wrote: > > On Sep 5, 3:50 pm, Lucas De Marchi <lucas.de.mar...@gmail.com> wrote: > > > > > > Indeed. I've tested this same test program in a single core machine and it > > > produces the expected behavior: > > > > > > rt_runtime_us / rt_period_us % loops executed in SCHED_OTHER > > > 95% 4.48% > > > 60% 54.84% > > > 50% 86.03% > > > 40% OTHER completed first > > > > > > > Hmm. This does seem to indicate that there is some kind of > > relationship with SMP. So I wonder whether there is a way to turn this > > 'RT bandwidth accumulation' heuristic off. > > No there isn't..
Actually there is, use cpusets to carve the system into partitions.
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