Sound performance problems in FreeBSD
q at uni.de
Thu Sep 9 01:25:30 PDT 2004
On Thu, 09.09.2004 at 02:47:40 -0400, Suleiman Souhlal wrote:
> FYI, after a few IRC discussions with Markus, we've discovered that
> turning off the memory part of Gnome's System Monitor applet, would get
> rid of the skips. I believe the problem is that both sysctl and the
> sound drivers are Giant-locked, and so there is some contention. An
> easy way to reproduce these skips is to run `while true; do sysctl
> vm.vmtotal; done`, while playing an mp3.
Not repdrocueable here on 5.3-BETA3. Even extracting the Mozilla sources
no longer produces skips ind mp3 playback.
pcm0: <Intel ICH4 (82801DB)> port 0xbc40-0xbc7f,0xb800-0xb8ff mem 0xf4fff400-0xf4fff4ff,0xf4fff800-0xf4fff9ff irq 5 at device 31.5 on pci0
pcm0: <SigmaTel STAC9750/51 AC97 Codec>
% cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
pcm0: <Intel ICH4 (82801DB)> at io 0xb800, 0xbc40 irq 5 bufsz 16384 kld snd_ich (1p/1r/4v channels duplex default)
PGP Key ID: F0DB9F44 Get it while it's hot!
PGP Fingerprint: F1CE D062 0CA9 ADE3 349B 2FE8 980A C6B5 F0DB 9F44
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety." -- Benjamin Franklin
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20040909/1029312e/attachment-0001.bin
More information about the freebsd-current