Messages in this thread | | | Date | Tue, 11 Oct 2016 11:27:47 +0100 | From | Matt Fleming <> | Subject | Re: [PATCH] sched/fair: Do not decay new task load on first enqueue |
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On Mon, 10 Oct, at 06:09:14PM, Wanpeng Li wrote: > 2016-10-10 18:01 GMT+08:00 Matt Fleming <matt@codeblueprint.co.uk>: > > On Sun, 09 Oct, at 11:39:27AM, Wanpeng Li wrote: > >> > >> The difference between this patch and Peterz's is your patch have a > >> delta since activate_task()->enqueue_task() does do update_rq_clock(), > >> so why don't have the delta will cause low cpu machines (4 or 8) to > >> regress against your another reply in this thread? > > > > Both my patch and Peter's patch cause issues with low cpu machines. In > > <20161004201105.GP16071@codeblueprint.co.uk> I said, > > > > "This patch causes some low cpu machines (4 or 8) to regress. It turns > > out they regress with my patch too." > > > > Have I misunderstood your question? > > I compare this one https://marc.info/?l=linux-kernel&m=147446511924571 > with Peterz's patch.
Oh. Low cpu machines probably do regress with my patch. At least, I can't find the notes to prove that they don't.
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