Date: Sat, 18 Mar 2006 06:03:31 +0800 From: Ariff Abdullah <ariff@FreeBSD.org> To: dick hoogendijk <dick@nagual.st> Cc: freebsd-questions@FreeBSD.org Subject: Re: soundcard optimize Message-ID: <20060318060331.6c7292ae.ariff@FreeBSD.org> In-Reply-To: <20060317222148.f387e46a.dick@nagual.st> References: <20060317222148.f387e46a.dick@nagual.st>
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--Signature=_Sat__18_Mar_2006_06_03_31_+0800_3H3KKNB7LRvKmIGN Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, 17 Mar 2006 22:21:48 +0100 dick hoogendijk <dick@nagual.st> wrote: > Running FreeBSD-6.0 on an older AMD duron800 (512Mb). Sometimes the > sound stutters. It's an older soundcard (es137x / SB PCI 128) >=20 > I *know* the sound support is much better in FreeBSD-6.1 but I can't > update yet (production server). The idea of having sound and multimedia facilities on production server is quite disturbing :) >=20 > So I wonder, are there sysctl setttings that will improve the sound > support in fbsd-6.0 that I can set? > 1) Enable virtual channels # sysctl hw.snd.maxautovchans=3D10 # sysctl hw.snd.pcm0.vchans=3D1 2) Increase PCI Latency Timer, either through BIOS, or using pciconf(8). You can use this: http://people.freebsd.org/~ariff/utils/pcilattimer .. to avoid cryptic nature of pciconf(8) (it is just a wrapper to pciconf, by the way). 3) Use SCHED_ULE .. wait, that is production server ;) -- Ariff Abdullah FreeBSD --Signature=_Sat__18_Mar_2006_06_03_31_+0800_3H3KKNB7LRvKmIGN Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEGzJBlr+deMUwTNoRAn+NAJwIlk8G7lWT/TmYG0u5V9tWqysb2ACgsDe3 uXzivOrJ6iOARqvPKrvywF8= =m+Fu -----END PGP SIGNATURE----- --Signature=_Sat__18_Mar_2006_06_03_31_+0800_3H3KKNB7LRvKmIGN--
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