From owner-freebsd-current@FreeBSD.ORG Mon Sep 20 16:16:44 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 421E016A4CE; Mon, 20 Sep 2004 16:16:44 +0000 (GMT) Received: from jc.ngo.org.uk (jc.ngo.org.uk [69.55.225.33]) by mx1.FreeBSD.org (Postfix) with ESMTP id 86E1943D1D; Mon, 20 Sep 2004 16:16:32 +0000 (GMT) (envelope-from nik@crf-consulting.co.uk) Received: from crf-consulting.co.uk (82-44-220-218.cable.ubr10.haye.blueyonder.co.uk [82.44.220.218]) by jc.ngo.org.uk (8.12.11/8.13.1) with ESMTP id i8KGGVLV096812; Mon, 20 Sep 2004 09:16:31 -0700 (PDT) (envelope-from nik@crf-consulting.co.uk) Received: from clan.nothing-going-on.org (clan.nothing-going-on.org [192.168.1.20])i8KGGVpQ010075; Mon, 20 Sep 2004 17:16:31 +0100 (BST) (envelope-from nik@catkin) Received: from clan.nothing-going-on.org (localhost [127.0.0.1]) i8KGGUGS042653; Mon, 20 Sep 2004 17:16:30 +0100 (BST) (envelope-from nik@clan.nothing-going-on.org) Received: (from nik@localhost) by clan.nothing-going-on.org (8.13.1/8.13.1/Submit) id i8KGGUME042652; Mon, 20 Sep 2004 17:16:30 +0100 (BST) (envelope-from nik) Date: Mon, 20 Sep 2004 17:16:30 +0100 From: Nik Clayton To: Nik Clayton , current@FreeBSD.ORG Message-ID: <20040920161628.GG30307@clan.nothing-going-on.org> References: <20040920100038.GA30307@clan.nothing-going-on.org> <20040920160019.GA3403@VARK.MIT.EDU> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="TmwHKJoIRFM7Mu/A" Content-Disposition: inline In-Reply-To: <20040920160019.GA3403@VARK.MIT.EDU> User-Agent: Mutt/1.4.2.1i Organization: FreeBSD Project Subject: Re: Brief freezes with -current as of early last week X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Sep 2004 16:16:44 -0000 --TmwHKJoIRFM7Mu/A Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Sep 20, 2004 at 12:00:19PM -0400, David Schultz wrote: > This sounds like an I/O hang. I've been having similar problems > related to WRITE_DMA and READ_DMA timeouts from the ata driver in > the last week or so, as discussed last week on this list. Are you > seeing these messages from the kernel? =20 Like these? ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=3D47240127 ad0: WARNING - READ_DMA no interrupt but good status ad1: TIMEOUT - READ_DMA retrying (2 retries left) LBA=3D165370263 ad1: WARNING - READ_DMA no interrupt but good status ad0 is a 2 year old 40GB disk, ad1 is 1 week old 120GB disk. > Julian suggested disabling > preemption, which I haven't tried yet, but other people report > limited success. I'm not running a kernel with 'options PREEMPTION' compiled in... N --=20 FreeBSD: The Power to Serve http://www.freebsd.org/ (__) FreeBSD Documentation Project http://www.freebsd.org/docproj/ \\\'',) \/ \= ^ --- 15B8 3FFC DDB4 34B0 AA5F 94B7 93A8 0764 2C37 E375 --- .\._/= _) --TmwHKJoIRFM7Mu/A Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBTwJck6gHZCw343URAvAtAKCEMkn8vaDPuKGeu+riB7Zy+C7E/gCggep1 cnuGkq9pToTBAG7v/W2H5vU= =hH86 -----END PGP SIGNATURE----- --TmwHKJoIRFM7Mu/A--