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Date: Mon, 4 Feb 2008 14:04:18 +0100 From: Ingo Molnar <mingo@...e.hu> To: Lukas Hejtmanek <xhejtman@....muni.cz> Cc: mingo@...hat.com, linux-kernel@...r.kernel.org, Peter Zijlstra <a.p.zijlstra@...llo.nl> Subject: Re: 2.6.24-git4+ regression * Lukas Hejtmanek <xhejtman@....muni.cz> wrote: > On Mon, Feb 04, 2008 at 01:01:32PM +0100, Ingo Molnar wrote: > > > > * Lukas Hejtmanek <xhejtman@....muni.cz> wrote: > > > > > but in such a case, kernel 2.6.24-git13 does oops at startup in > > > sched_slice. > > > > could you tell me more about this oops? You booted unmodified, latest > > -git and it oopsed in sched_slice()? The patch below should work around > > any oopses in sched_slice(). [but this is really a 'must not happen' > > scenario - so a just-for-testing patch] > > No, I booted modified lates git to see if mentioned patch (revertin > slices) solves horrible non-interactivy problem. With your fix, I can > boot now but the patch did not help. Make -j2 in kernel sources > significantly decreases interactivity. Any ideas? yes, please run latencytop - does it pinpoint any latency source? Enable CONFIG_LATENCYTOP in the -git13 kernel and run the utility from latencytop.org. Also, please send me the output of this script: http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh 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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