Date: Thu, 9 Sep 2004 10:25:25 +0200 From: Ulrich Spoerlein <q@uni.de> To: Suleiman Souhlal <ssouhlal@FreeBSD.org> Cc: Markus =?iso-8859-15?Q?H=E4stbacka?= <midian@ihme.org> Subject: Re: Sound performance problems in FreeBSD Message-ID: <20040909082525.GA778@galgenberg.net> In-Reply-To: <24D02CEA-022C-11D9-870B-000A95C4D7BC@FreeBSD.org> References: <20040905124526.F15143@midi.ihme.net> <24D02CEA-022C-11D9-870B-000A95C4D7BC@FreeBSD.org>
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--lrZ03NoBR/3+SXJZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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=20 > turning off the memory part of Gnome's System Monitor applet, would get= =20 > rid of the skips. I believe the problem is that both sysctl and the=20 > sound drivers are Giant-locked, and so there is some contention. An=20 > easy way to reproduce these skips is to run `while true; do sysctl=20 > 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 0xf4fff40= 0-0xf4fff4ff,0xf4fff800-0xf4fff9ff irq 5 at device 31.5 on pci0 pcm0: [GIANT-LOCKED] pcm0: <SigmaTel STAC9750/51 AC97 Codec> % cat /dev/sndstat FreeBSD Audio Driver (newpcm) Installed devices: pcm0: <Intel ICH4 (82801DB)> at io 0xb800, 0xbc40 irq 5 bufsz 16384 kld snd= _ich (1p/1r/4v channels duplex default) Ulrich Spoerlein --=20 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 --lrZ03NoBR/3+SXJZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (FreeBSD) iD8DBQFBQBN1mArGtfDbn0QRArmmAKCQUlyxmWI6je8i+aCt6XmmmrIVCQCgrg4G cFe6ow+n5IwNCtwnBnBm70U= =1N2o -----END PGP SIGNATURE----- --lrZ03NoBR/3+SXJZ--
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