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Message-ID: <20090904124054.GA9490@elte.hu> Date: Fri, 4 Sep 2009 14:40:54 +0200 From: Ingo Molnar <mingo@...e.hu> To: Peter Zijlstra <peterz@...radead.org> Cc: Marton Balint <cus@...ekas.hu>, Andreas Mohr <andi@...as.de>, linux-kernel@...r.kernel.org Subject: Re: CPU scheduler weirdness? * Peter Zijlstra <peterz@...radead.org> wrote: > On Thu, 2009-09-03 at 23:57 +0200, Marton Balint wrote: > > > sched: fine-tune SD_MC_INIT: > > > 14800984706bf6936bbec5187f736e928be5c218 > > > > > > If I add again the removed SD_BALANCE_NEWIDLE to flags, then everything works > > > as expected. So what would be the correct fix for this bug? Revert the patch? > > > Or just add SD_BALANCE_NEWIDLE to flags? > > > > > > Ingo, Peter, could any of you guys have a look at the commit > > that caused this bug? Is it OK to revert it? Or a fix somewhere > > else is necessary? I'm pushing this because I hope that this bug > > will get fixed in the upcoming stable kernel... > > I'm fine with re-adding SD_BALANCE_IDLE and SD_WAKE_IDLE on > SMT/MC/CPU levels. > > Ingo? Ok, agreed. I have re-benchmarked a couple of key workload and it seems like a good change, on top of your load-balancer fixes. Marton, could you please double check the latest -tip tree: http://people.redhat.com/mingo/tip.git/README Does it resolve the problem? Thanks, Ingo -- 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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