From owner-freebsd-hackers@FreeBSD.ORG Thu Jul 15 12:34:40 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2BAA31065673 for ; Thu, 15 Jul 2010 12:34:40 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id F2F7D8FC0A for ; Thu, 15 Jul 2010 12:34:39 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 9799546B29; Thu, 15 Jul 2010 08:34:39 -0400 (EDT) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id CF7A28A03C; Thu, 15 Jul 2010 08:34:38 -0400 (EDT) From: John Baldwin To: freebsd-hackers@freebsd.org Date: Thu, 15 Jul 2010 08:07:21 -0400 User-Agent: KMail/1.13.5 (FreeBSD/7.3-CBSD-20100217; KDE/4.4.5; amd64; ; ) References: <6E83197B-9DD5-4C7E-846D-AD176C25464D@niksun.com> In-Reply-To: <6E83197B-9DD5-4C7E-846D-AD176C25464D@niksun.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201007150807.21529.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Thu, 15 Jul 2010 08:34:38 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: Andrew Heybey Subject: Re: 8.1RC2 amd64 machine check question X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jul 2010 12:34:40 -0000 On Wednesday, July 14, 2010 11:25:29 am Andrew Heybey wrote: > Got the following in /var/log/messages on my one-week-old amd64 box running 8.1RC2: > > Jul 13 20:30:17 spaten kernel: MCA: Global Cap 0x0000000000000106, Status 0x0000000000000000 > Jul 13 20:30:17 spaten kernel: MCA: Vendor "AuthenticAMD", ID 0x100f43, APIC ID 0 > Jul 13 20:30:17 spaten kernel: MCA: CPU 0 COR GCACHE LG EVICT error > Jul 13 20:30:17 spaten kernel: MCA: Address 0x2a49464c I tend to use mcelog to get more detailed results. Unfortunately this is missing the first line which contains the bank number and status register, so I can't provide any extra details. I really should make a port of mcelog, but the patches I have to it aren't a complete port. > My questions are: > > 1. Did I interpret the message correctly (correctable error on my L3 cache)? Probably, though mcelog output would be better. > 2. Is it anything to worry about? Or is this just one of those things that happens but now it gets logged whereas before I was blissfully ignorant? Given that it is correctable it probably isn't an issue. It was not reported in earlier releases, so there is a chance that this could have been happening previously. -- John Baldwin