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

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Message-ID: <20080407112459.GA11532@linux.vnet.ibm.com>
Date:	Mon, 7 Apr 2008 16:54:59 +0530
From:	Dhaval Giani <dhaval@...ux.vnet.ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Frans Pop <elendil@...net.nl>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [rc8] Regression: key repeats and skips in music during
	compilation

On Mon, Apr 07, 2008 at 12:29:26PM +0200, Rafael J. Wysocki wrote:
> 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.
> 

I thought we had most of the issues ironed out.

/me tries to reproduce.

-- 
regards,
Dhaval
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