From owner-freebsd-current@FreeBSD.ORG Thu Apr 22 23:24:10 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9C4301065674 for ; Thu, 22 Apr 2010 23:24:10 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id DEAA38FC1A for ; Thu, 22 Apr 2010 23:24:09 +0000 (UTC) Received: from porto.topspin.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id CAA17978; Fri, 23 Apr 2010 02:24:04 +0300 (EEST) (envelope-from avg@icyb.net.ua) Received: from localhost.topspin.kiev.ua ([127.0.0.1]) by porto.topspin.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1O55ka-0008iA-9m; Fri, 23 Apr 2010 02:24:04 +0300 Message-ID: <4BD0DA93.5050109@icyb.net.ua> Date: Fri, 23 Apr 2010 02:24:03 +0300 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.24 (X11/20100321) MIME-Version: 1.0 To: Steve Kargl References: <20100422222834.GA93197@troutmask.apl.washington.edu> In-Reply-To: <20100422222834.GA93197@troutmask.apl.washington.edu> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: MCA messages in /var/log/message? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Thu, 22 Apr 2010 23:24:10 -0000 on 23/04/2010 01:28 Steve Kargl said the following: > How does one interpret the following MCA message? > > MCA: Bank 4, Status 0x945a4000d6080a13 > MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000 > MCA: Vendor "AuthenticAMD", ID 0xf5a, APIC ID 0 > MCA: CPU 0 COR BUSLG Responder RD Memory > MCA: Address 0x70c42280 > MCA: Bank 4, Status 0x942140012a080813 > MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000 > MCA: Vendor "AuthenticAMD", ID 0xf5a, APIC ID 1 > MCA: CPU 1 COR BUSLG Source RD Memory > MCA: Address 0x1b97ca578 > > It appears that these messages coincide with a 15 to 30 > second period where my USB mouse inexplicably loses a > large number of button clicks, (which is quite noticable > with firefox3). This very much looks like DRAM ECC error. You seem to have family Fh AMD processor, so I am not entirely sure. But for 10h processors BKDG table 80 (NB error signatures) definitely specifies that extended error code of 8 (in bits 20:16) means ECC error. -- Andriy Gapon