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Date: Tue, 16 Dec 2014 10:09:48 +0800 From: Yuyang Du <yuyang.du@...el.com> To: Sasha Levin <sasha.levin@...cle.com> Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>, Dave Jones <davej@...hat.com>, Andrey Ryabinin <a.ryabinin@...sung.com>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: sched: odd values for effective load calculations On Mon, Dec 15, 2014 at 11:51:46PM -0500, Sasha Levin wrote: > On 12/15/2014 07:12 AM, Peter Zijlstra wrote: > > > > Sorry for the long delay, I was out for a few weeks due to having become > > a dad for the second time. > > Congrats! May you be able to sleep at night sooner rather than later. Congrats +1. > > It's fairy reproducible, I've seen it happen quite a few times. What other > information might be useful? > Sasha, it might be helpful to see this_load is from: this_load1: this_load = target_load(this_cpu, idx); or this_load2: this_load += effective_load(tg, this_cpu, -weight, -weight); It really does not seem to be this_load1, while the calc of effective_load is a bit complicated to see what the problem is. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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