From owner-freebsd-alpha@FreeBSD.ORG Thu Aug 18 11:16:28 2005 Return-Path: X-Original-To: freebsd-alpha@freebsd.org Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AA57E16A41F for ; Thu, 18 Aug 2005 11:16:28 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id C305C43D49 for ; Thu, 18 Aug 2005 11:16:27 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [10.1.1.7]) (authenticated bits=0) by srv1.cosmo-project.de (8.12.10/8.12.10) with ESMTP id j7IBGMBS083158 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Thu, 18 Aug 2005 13:16:25 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (cicely12.cicely.de [10.1.1.14]) by cicely5.cicely.de (8.12.10/8.12.10) with ESMTP id j7IBFrJ7070894 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 18 Aug 2005 13:15:53 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (localhost [127.0.0.1]) by cicely12.cicely.de (8.12.11/8.12.11) with ESMTP id j7IBFqS9088583; Thu, 18 Aug 2005 13:15:52 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: (from ticso@localhost) by cicely12.cicely.de (8.12.11/8.12.11/Submit) id j7IBFq9w088582; Thu, 18 Aug 2005 13:15:52 +0200 (CEST) (envelope-from ticso) Date: Thu, 18 Aug 2005 13:15:51 +0200 From: Bernd Walter To: harrisb@rcisd.org Message-ID: <20050818111551.GP77387@cicely12.cicely.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: FreeBSD cicely12.cicely.de 5.2-CURRENT alpha User-Agent: Mutt/1.5.9i X-Spam-Status: No, hits=-4.9 required=3.0 tests=BAYES_00 autolearn=ham version=2.64 X-Spam-Report: * -4.9 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on cicely12.cicely.de Cc: freebsd-alpha@freebsd.org Subject: Re: machine check on 4100 5.4-RELEASE X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Aug 2005 11:16:28 -0000 On Wed, Aug 17, 2005 at 04:53:28PM -0500, harrisb@rcisd.org wrote: > All of a sudden, I'm getting regular crashes with machine check's. > > I've pulled one of the 533 CPU's, which didn't help, and now am > wondering if it's possible that my instance of Mysql with all it's > unaligned errors > could possibly cause it crash? I've stopped the mysql daemon for a > while just to see if it stabilizes. Anyone have any ideas? > > It will crash after it's been up for days, and then immediately after > reboot. Details about the machine checks would be interesting. Unaligned errors in userland are corrected or the appplication is terminated, depending on configuration. Only unaligned faults inside the kernel are fatal. > I keep thinking hardware, but all the srm test fine. Hard- and software is possible, but without further details this is hard to say. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de