On Friday, 1 of February 2008, Rafael J. Wysocki wrote:
> Hi,
> 
> This is related to the problem I reported earlier this week:
> http://lkml.org/lkml/2008/1/30/554
> 
> Apparently artswrapper, run by KDE in openSUSE 10.3 with a real time priority,
> is mishandled by the scheduler.  The problem is that after the user logs out,
> artswrapper stays in TASK_RUNNING forever and prevents other tasks from being
> scheduled on the CPU occupied by it.  In this state it also breaks suspend and
> hibernation (it cannot be frozen).
> 
> Since the problem is 100% reproducible on my test boxes, I carried out a
> bisection which turned out the following commit:
> 
> commit 6f505b16425a51270058e4a93441fe64de3dd435
> Author: Peter Zijlstra <[EMAIL PROTECTED]>
> Date:   Fri Jan 25 21:08:30 2008 +0100
> 
>     sched: rt group scheduling
> 
> I'm now checking if the problem disappears after reverting this patch (along a
> couple of dependent ones).

Yes, it does.

Please let me know what I can do to debug it further.

Thanks,
Rafael
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