From owner-freebsd-questions@FreeBSD.ORG Thu Mar 16 23:17:38 2006 Return-Path: X-Original-To: freebsd-questions@FreeBSD.org Delivered-To: freebsd-questions@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DB0ED16A423 for ; Thu, 16 Mar 2006 23:17:38 +0000 (UTC) (envelope-from ariff@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id B16FE43D55; Thu, 16 Mar 2006 23:17:31 +0000 (GMT) (envelope-from ariff@FreeBSD.org) Received: from misaki64 (root@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with SMTP id k2GNHTbm016242; Thu, 16 Mar 2006 23:17:30 GMT (envelope-from ariff@FreeBSD.org) Date: Fri, 17 Mar 2006 07:17:17 +0800 From: Ariff Abdullah To: Mark Kane 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> Organization: FreeBSD X-Mailer: /usr/local/lib/ruby/1.8/net/smtp.rb Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA1"; boundary="Signature=_Fri__17_Mar_2006_07_17_17_+0800_yOjl4QKs_yUm=L=6" Cc: freebsd-questions@FreeBSD.org Subject: Re: Sound Crackling When Reading From Hard Drives X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Mar 2006 23:17:38 -0000 --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 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--