Date: Mon, 2 Jul 2007 20:51:09 +0200 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: freebsd-multimedia@freebsd.org Subject: syscons + mouse == stuttering playback Message-ID: <20070702185109.GA1438@roadrunner.q.local>
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Hi, 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'm using kern.hz=100, if it matters. Is somebody able to reproduce it? cat /dev/sndstat 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:1v/1r:1v channels duplex default) dev.pcm.0.%desc: Intel ICH4 (82801DB) dev.pcm.0.%driver: pcm dev.pcm.0.%location: slot=31 function=5 handle=\_SB_.PCI0.AUD_ dev.pcm.0.%pnpinfo: vendor=0x8086 device=0x24c5 subvendor=0x1028 subdevice=0x0191 class=0x040100 dev.pcm.0.%parent: pci0 dev.pcm.0.eapd: 1 dev.pcm.0.play.vchans: 1 dev.pcm.0.play.vchanrate: 48000 dev.pcm.0.play.vchanformat: s16le dev.pcm.0.rec.vchans: 1 dev.pcm.0.rec.vchanrate: 48000 dev.pcm.0.rec.vchanformat: s16le dev.pcm.0.buffersize: 16384 dev.pcm.0.ac97rate: 48000 Cheers, Ulrich Spoerlein -- "The trouble with the dictionary is you have to know how the word is spelled before you can look it up to see how it is spelled." -- Will Cuppy
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