Messages in this thread | | | Date | Mon, 23 Apr 2007 11:25:02 +0200 | From | Ingo Molnar <> | Subject | Re: [patch] CFS scheduler, -v5 |
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* Nick Piggin <npiggin@suse.de> wrote:
> > yeah - but they'll all be quad core, so the SMP timeslice > > multiplicator should do the trick. Most of the CFS testers use > > single-CPU systems. > > But desktop users could have have quad thread and even 8 thread CPUs > soon, [...]
SMT is indeed an issue, so i think what should be used to scale timeslices isnt num_online_cpus(), but the sum of all CPU's ->cpu_power value (scaled down by SCHED_LOAD_SCALE). That way if the thread is not a 'full CPU', then the scaling will be proportionally smaller. Can you see any hole in that?
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