Date: Fri, 17 Mar 2006 07:17:17 +0800 From: Ariff Abdullah <ariff@FreeBSD.org> To: Mark Kane <mark@mkproductions.org> Cc: freebsd-questions@FreeBSD.org Subject: Re: Sound Crackling When Reading From Hard Drives Message-ID: <20060317071717.608ee0a2.ariff@FreeBSD.org> In-Reply-To: <4419EBA9.5070606@mkproductions.org> References: <44192538.80102@mkproductions.org> <20060316171905.2d3029bf.ariff@FreeBSD.org> <4419EBA9.5070606@mkproductions.org>
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--Signature=_Fri__17_Mar_2006_07_17_17_+0800_yOjl4QKs_yUm=L=6 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, 16 Mar 2006 16:50:17 -0600 Mark Kane <mark@mkproductions.org> wrote: >=20 > My sound is compiled into the kernel so I'm not sure how to reload > the driver without rebooting. I did try the above suggestions > though. When trying 32768 and 65536 the crackling in the audio got > worse/louder than before when copying data. >=20 Maybe you're experiencing resource contention caused by irq sharing. Take a look at the output of vmstat -i. Try to move the soundcard elsewhere (other pci slot). Another thing to consider is PCI Latency Timer settings. If your BIOS has the option to toggle the value, try to increase it. If not, use this: http://people.freebsd.org/~ariff/utils/pcilattimer -- Ariff Abdullah FreeBSD --Signature=_Fri__17_Mar_2006_07_17_17_+0800_yOjl4QKs_yUm=L=6 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEGfIAlr+deMUwTNoRAh4wAJ4k5uHcE+LQOzIrYpOECN3ilbUuNgCePlUL x0xcomd+1Pu7hEeiEZMVZ7k= =5TN1 -----END PGP SIGNATURE----- --Signature=_Fri__17_Mar_2006_07_17_17_+0800_yOjl4QKs_yUm=L=6--
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