Date: Thu, 26 Jul 2007 19:31:30 +0200 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: Tijl Coosemans <tijl@ulyssis.org> Cc: freebsd-multimedia@freebsd.org Subject: Re: syscons + mouse == stuttering playback Message-ID: <20070726173130.GD1857@roadrunner.q.local> In-Reply-To: <200707142109.28398.tijl@ulyssis.org> References: <20070702185109.GA1438@roadrunner.q.local> <200707141846.14595.tijl@ulyssis.org> <20070714184410.GF1542@roadrunner.q.local> <200707142109.28398.tijl@ulyssis.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, 14.07.2007 at 21:09:26 +0200, Tijl Coosemans wrote: > 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. Another interesting datapoint: playback over HPS' uaudio(4) is *not* affected. Perhaps the problem is specific to Intel ICH audio? FreeBSD Audio Driver (newpcm: 32bit 2007061600/i386) Installed devices: pcm0: <Intel ICH4 (82801DB)> at io 0xf4fff800, 0xf4fff400 irq 9 bufsz 16384 kld snd_ich [MPSAFE] (1p:2v/1r:1v channels duplex default) pcm1: <USB audio> at ? kld snd_uaudio [GIANT] (1p:1v/1r:1v channels duplex) Cheers, Ulrich Spoerlein -- "It is better to remain silent and be thought a fool, than to speak, and remove all doubt."
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070726173130.GD1857>