Date: Fri, 11 Jan 2008 17:53:14 +0100 From: Roland Smith <rsmith@xs4all.nl> To: Julian Stacey <jhs@berklix.org> Cc: stable@freebsd.org Subject: Re: sticky sound on 7 stable Message-ID: <20080111165314.GA83724@slackbox.xs4all.nl> In-Reply-To: <200801111444.m0BEiaS4093841@fire.js.berklix.net> References: <200801111444.m0BEiaS4093841@fire.js.berklix.net>
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--BOKacYhQ+x31HxR3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 11, 2008 at 03:44:36PM +0100, Julian Stacey wrote: > Hi stable@ > I have sticky sound flow on 2 different slowish laptops running 7 > Stable, Sound plays for a few secs, then breaks for a fraction & > resumes, repeatedly. I guess fault is not sound config, hence I'm > not posting multimedia@, but stable@ where I've seen other Sticky > 7 response topics. > Much other info on both laptops & their BSD conf. here: > host=3Dlapd CPU 166M 586=20 > http://www.berklix.com/~jhs/hardware/digital/ > host=3Dlapn CPU 133M 586=20 > http://www.berklix.com/~jhs/hardware/laptops/dell_latitude_xpi_p133st/ > Many dmesg & other debug info linked within, anything else you want > please just tell me debug command to run. I'm happy to try src/ & > sys/ patches etc. Pref. based on 7-stable. >=20 > Both have /boot/loader.conf: > hw.ata.ata_dma=3D"0" # Essential else disk access fails. > Could that be it ?=20 > both report from xs atacontrol mode ad0 > current mode =3D PIO4 This won't help. Mayby there is a BIOS setting that would enable you to run with dma enabled. =20 > I dont know about HZ setting, or different schedulers, but happy On 7.x, it is recommended to use SCHED_ULE. I'm not sure what compiling the kernel with HZ=3D1000 would accomplish, the default is HZ=3D100. See Have a look at the sound(4) manual page. There are some sysctls that influence latency; hw.snd.latency_profile and hw.snd.latency. If the problem is IRQ processing, you could try setting dev.pcm.0.polling to 1 if the driver supports it. Another thing to check is if the sound card isn't sharing an interrupt with other devices. The command 'ps -xa | grep irq' would be of use there. Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --BOKacYhQ+x31HxR3 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHh576EnfvsMMhpyURAmEgAJwKo7tOlVzNOV91bnrWn/OvhK/kHQCeOntq JZIeZjNWVpkzAnfAVZrtV5c= =nx6l -----END PGP SIGNATURE----- --BOKacYhQ+x31HxR3--
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