From owner-freebsd-stable@FreeBSD.ORG Mon Jan 24 07:36:34 2011 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8E7B11065670 for ; Mon, 24 Jan 2011 07:36:34 +0000 (UTC) (envelope-from dalroi@solfertje.student.utwente.nl) Received: from solfertje.student.utwente.nl (solfertje.student.utwente.nl [130.89.167.40]) by mx1.freebsd.org (Postfix) with ESMTP id 47F2C8FC1A for ; Mon, 24 Jan 2011 07:36:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by solfertje.student.utwente.nl (Postfix) with SMTP id B243A8063 for ; Mon, 24 Jan 2011 08:36:32 +0100 (CET) Received: from hollewijn.internal (hollewijn.internal [10.236.150.4]) by solfertje.student.utwente.nl (Postfix) with ESMTP id 7B6748053; Mon, 24 Jan 2011 08:36:13 +0100 (CET) Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: text/plain; charset=us-ascii From: Alban Hertroys In-Reply-To: <4d3d07de.Zks2QhWq07V8ucNL%perryh@pluto.rain.com> Date: Mon, 24 Jan 2011 08:36:13 +0100 Content-Transfer-Encoding: 8bit Message-Id: <24866F34-E715-49DE-B9BB-BECF9EFF7772@solfertje.student.utwente.nl> References: <652E5569-2566-4D3C-BC8B-C8B00F3B61EA@solfertje.student.utwente.nl> <4d3d07de.Zks2QhWq07V8ucNL%perryh@pluto.rain.com> To: perryh@pluto.rain.com X-Mailer: Apple Mail (2.1082) X-DSPAM-Result: Innocent X-DSPAM-Processed: Mon Jan 24 08:36:32 2011 X-DSPAM-Confidence: 1.0000 X-DSPAM-Probability: 0.0023 X-DSPAM-Signature: 363,4d3d2c0011731311418875 X-DSPAM-Factors: 27, Address+0x162933f0, 0.40000, From*Alban, 0.40000, clogged, 0.40000, hotter+than, 0.40000, solfertje+student, 0.40000, amazing+how, 0.40000, Mime-Version*Message, 0.40000, student, 0.40000, Message-Id*49DE+B9BB, 0.40000, acceptable+temperature, 0.40000, one)+has, 0.40000, Global+Cap, 0.40000, DRD, 0.40000, or, 0.40000, an, 0.40000, an, 0.40000, already+), 0.40000, 10, 0.40000, from, 0.40000, amazing, 0.40000, >>+errors, 0.40000, gotten, 0.40000, rain+com, 0.40000, of, 0.40000, of, 0.40000, >+Alban, 0.40000, quit, 0.40000 Cc: stable@freebsd.org Subject: Re: Machine check errors X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Jan 2011 07:36:34 -0000 On 24 Jan 2011, at 6:02, perryh@pluto.rain.com wrote: > Alban Hertroys wrote: > >> Ever since installing 7.4-PRERELEASE I'm seeing MCA machine check >> errors on my home-server ... >> >> MCA: Bank 0, Status 0xb622000000000135 >> MCA: Global Cap 0x0000000000000104, Status 0x0000000000000004 >> MCA: Vendor "AuthenticAMD". ID 0x662, APIC ID 1 >> MCA: CPU 0 UNCOR PCC DCACHE L1 DRD error > ^^^^^^^^^ >> MCA: Address 0x162933f0 > > That's an error in the on-chip data cache. It is, I saw that too. > The first thing I would check is cooling. Maybe one of the fans > has quit working, or the air filter (if the box has one) has gotten > clogged up with dust, so that the CPU is running hotter than it > should. It's amazing how your perception of acceptable temperature ranges rises with the actual average temperature. Turns out the last time I unclogged the dust filter on the case was longer ago than I thought it was. Good call! Temperature went down from 55C to 46C over the last 10 minutes already... I think I'm starting to appreciate the MCA feature already :) Alban Hertroys -- Screwing up is an excellent way to attach something to the ceiling. !DSPAM:363,4d3d2c0011731311418875!