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Date: Mon, 18 Feb 2008 08:38:24 +0100 From: Mike Galbraith <efault@....de> To: Ingo Molnar <mingo@...e.hu> Cc: Lukas Hejtmanek <xhejtman@....muni.cz>, Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>, mingo@...hat.com, linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl, dhaval@...ux.vnet.ibm.com, aneesh.kumar@...ibm.com Subject: Re: 2.6.24-git4+ regression On Mon, 2008-02-18 at 05:28 +0100, Ingo Molnar wrote: > * Lukas Hejtmanek <xhejtman@....muni.cz> wrote: > > > On Thu, Feb 14, 2008 at 10:25:51PM +0530, Srivatsa Vaddagiri wrote: > > > The patch is against 2.6.25-rc1. I would request you to check for > > > difference it makes with CONFIG_FAIR_GROUP_SCHED and > > > CONFIG_FAIR_USER_SCHED turned on. > > > > well, I tried the patch against 2.6.25-rc2-git1. It seems to be better > > but without CONFIG_FAIR_GROUP_SCHED it is still even better. > > could you try latest sched-devel.git, does it behave any better? Here, it does not. It seems fine without CONFIG_FAIR_GROUP_SCHED. Oddity: mainline git with Srivatsa's test patch improves markedly, and using sched_latency_ns and sched_wakeup_granularity_ns, I can tweak the regression into submission. With sched-devel, I cannot tweak it away with or without the test patch. Dunno how useful that info is. -Mike -- 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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