Re: 2.6.24-git4+ regression

[Ingo Molnar]

* Lukas Hejtmanek <xhejtman@xxxxxxxxxxx> wrote:

> On Mon, Feb 04, 2008 at 01:01:32PM +0100, Ingo Molnar wrote:
> > 
> > * Lukas Hejtmanek <xhejtman@xxxxxxxxxxx> 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
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