Messages in this thread | | | From | Vincent Guittot <> | Date | Mon, 24 Nov 2014 14:23:12 +0100 | Subject | Re: [PATCH v2 09/11] sched: test the cpu's capacity in wake affine |
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On 24 November 2014 at 01:34, Wanpeng Li <kernellwp@gmail.com> wrote: > Hi Vincent, > On 5/28/14, 7:15 PM, Vincent Guittot wrote: >> >> On 28 May 2014 12:58, Peter Zijlstra <peterz@infradead.org> wrote: >>> >>> On Fri, May 23, 2014 at 05:53:03PM +0200, Vincent Guittot wrote: > > [snip] >>> >>> Now I'm only struggling to understand the rationale for this, its got >>> LLC in there somewhere, but I'm failing to comprehend. >> >> Ah.. i have probably overestimated the fact that wake_affine was only >> done at MC or SMT level but after reading more deeply the glags >> configuration of all sched_domain level , my assumption is not true. > > > What's level the wake_affine should happen?
In 1st version of this patch, it was proposed to test the cpu_capacity of idle CPU only if they were sharing their cache
Regards, Vincent > > Regards, > Wanpeng Li > >> So I need to test sd flag to make sure that their share their cache at >> this level >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > >
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