linux-kernel - Re: [rc8] Regression: key repeats and skips in music during compilation

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Date:	Mon, 7 Apr 2008 12:29:26 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Frans Pop <elendil@...net.nl>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [rc8] Regression: key repeats and skips in music during compilation

On Monday, 7 of April 2008, Frans Pop wrote:
> On Monday 07 April 2008, Rafael J. Wysocki wrote:
> > On Sunday, 6 of April 2008, Rafael J. Wysocki wrote:
> > > On Friday, 4 of April 2008, Frans Pop wrote:
> > > > While compiling glibc I am getting frequent short skips in music play
> > > > anddddddddddddddddd I have now three times seen key repeats (as in
> > > > this sentence). When there is a skip in the music, there is also a
> > > > delay in characters being typed appearing on the screen.
> > >
> > > Can you test with CONFIG_GROUP_SCHED unset, please?
> >
> > I was able to reproduce this issue with -rc8 on one of my test systems,
> 
> Thanks Rafael.
> 
> In the mean time I have verified that the issue also existed in rc6, so it's 
> not a recent regression.
> 
> > but I'm not any more with the current Linus' tree and CONFIG_GROUP_SCHED
> > unset, FWIW.
> 
> Hmm. Does that mean that you _can_ reproduce it with git HEAD and 
> CONFIG_GROUP_SCHED set? That would mean it is still an issue in HEAD and 
> group scheduling is the culprit.

Well, CONFIG_GROUP_SCHED is known to cause problems, AFAICS, and some fixes
are scheduled for the 2.6.26 time frame.

Thanks,
Rafael
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