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Date:      Sat, 14 Jul 2007 21:09:26 +0200
From:      Tijl Coosemans <tijl@ulyssis.org>
To:        Ulrich Spoerlein <uspoerlein@gmail.com>
Cc:        freebsd-multimedia@freebsd.org
Subject:   Re: syscons + mouse == stuttering playback
Message-ID:  <200707142109.28398.tijl@ulyssis.org>
In-Reply-To: <20070714184410.GF1542@roadrunner.q.local>
References:  <20070702185109.GA1438@roadrunner.q.local> <200707141846.14595.tijl@ulyssis.org> <20070714184410.GF1542@roadrunner.q.local>

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On Saturday 14 July 2007 20:44:10 Ulrich Spoerlein wrote:
> On Sat, 14.07.2007 at 18:46:13 +0200, Tijl Coosemans wrote:
> > On Monday 02 July 2007 20:51:09 Ulrich Spoerlein wrote:
> > > on a recent CURRENT, without WITNESS or INVARIANTS. Both with
> > > SCHED_ULE and SCHED_4BSD I observed the following:
> > > 
> > > Make sure almost nothing is running (to rule out other influences).
> > > Run mpg123 on some MP3 file. Then start moving the syscons mouse
> > > cursor. I get a high frequency stuttering on playback, playback is
> > > also slowed down.
> > 
> > I just noticed it. I was playing music in Amarok, switched to a text
> > terminal and moving the mouse there causes stuttering. In X it
> > doesn't...
> 
> Are you using an USB mouse? I do, perhaps it is caused by the Giant
> lock? I can't test with a PS/2 mouse, but perhaps I could run a test
> with Hans' USB stack (giant free).

Yes, usb mouse, but this laptop touchpad (PS/2?) has the same effect.



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