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Subject: Re: [patch] voluntary-preempt-2.6.8-rc2-M5
From: Lee Revell <rlrevell@joe-job.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>, Scott Wood <scott@timesys.com>
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Date: Mon, 16 Aug 2004 06:43:02 -0400
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On Mon, 2004-08-16 at 06:38, Takashi Iwai wrote:
> Hi,
> 
> (sorry for late reply, just back from vacation)
> 
> At Fri, 06 Aug 2004 22:54:26 -0400,
> Lee Revell wrote:
> > 
> > On Mon, 2004-08-02 at 11:19, Takashi Iwai wrote:
> > > At Fri, 30 Jul 2004 18:54:39 -0400,
> > > Lee Revell wrote:
> > > > 
> > > > I discovered that a few of the XRUN traces were spurious - jackd
> > > > apparently does something while stopping and starting that produces an
> > > > XRUN trace but that jackd does not consider an error.  I will fix this
> > > > in jackd.  The msync() related XRUN triggered by apt-get is definitely
> > > > real.
> > > 
> > > Yes.  There is a bogus report at stopping (snd_pcm_drain is called).
> > > It was fixed in the recent ALSA cvs tree, but seems not propagated to
> > > bk yet...
> > > 
> > 
> > It also seems to produce an xrun at startup.  This is with the latest
> > ALSA CVS.  Is this behavior by design?
> 
> No, this is not.  It should be a real XRUN, I believe.
> 

This one has still defied explanation.  The working theory was that it
was the same bug causing an xrun if an unrelated process called
mlockall, but now that bug has been fixed, and this xrun at startup
still happens.

Lee