From owner-freebsd-stable@FreeBSD.ORG Fri Dec 24 23:22:08 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6A4B81065674 for ; Fri, 24 Dec 2010 23:22:08 +0000 (UTC) (envelope-from carlj@peak.org) Received: from redcondor1.peak.org (redcondor1.peak.org [69.59.192.54]) by mx1.freebsd.org (Postfix) with ESMTP id 1C1E38FC27 for ; Fri, 24 Dec 2010 23:22:07 +0000 (UTC) Received: from peak-mail-gateway.peak.org ([69.59.192.42]) by redcondor1.peak.org ({e03e86cd-14ae-47ce-9578-3c080ce9c462}) via TCP (outbound) with ESMTP id 20101224230849085 for ; Fri, 24 Dec 2010 23:08:49 +0000 X-RC-FROM: X-RC-RCPT: Received: from oak.localnet (207.55.91.159.peak.org [207.55.91.159] (may be forged)) by peak-mail-gateway.peak.org (8.12.10/8.12.8) with ESMTP id oBON8mW7027975 for ; Fri, 24 Dec 2010 15:08:48 -0800 (PST) Received: from oak.localnet (localhost [127.0.0.1]) by oak.localnet (Postfix) with ESMTP id 6A2D1CC9E for ; Fri, 24 Dec 2010 15:08:48 -0800 (PST) Received: (from carlj@localhost) by oak.localnet (8.14.4/8.14.4/Submit) id oBON8muC016207; Fri, 24 Dec 2010 15:08:48 -0800 (PST) (envelope-from carlj@peak.org) X-Authentication-Warning: oak.localnet: carlj set sender to carlj@peak.org using -f From: Carl Johnson To: freebsd-stable@freebsd.org References: <4D11F1F5.7050902@quip.cz> <201012220957.26854.jhb@freebsd.org> <4D13A579.8090004@langille.org> Date: Fri, 24 Dec 2010 15:08:48 -0800 In-Reply-To: (Alan Cox's message of "Fri, 24 Dec 2010 13:20:16 -0600") Message-ID: <87vd2iepkv.fsf@oak.localnet> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: MCA messages after upgrade to 8.2-BEAT1 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: Fri, 24 Dec 2010 23:22:08 -0000 Alan Cox writes: > 2010/12/23 Dan Langille > >> On 12/22/2010 9:57 AM, John Baldwin wrote: >> >>> On Wednesday, December 22, 2010 7:41:25 am Miroslav Lachman wrote: >>> >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Bank 0, Status 0xd40e400000000833 >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Global Cap 0x0000000000000105, >>>> Status 0x0000000000000000 >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Vendor "AuthenticAMD", ID 0x40f33, >>>> APIC ID 0 >>>> Dec 21 12:42:26 kavkaz kernel: MCA: CPU 0 COR OVER BUSLG Source DRD >>>> Memory >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Address 0x236493c0 >>>> >>> >>> You are getting corrected ECC errors in your RAM. You see them once an >>> hour >>> because we poll the machine check registers once an hour. If this happens >>> constantly you might have a DIMM that is dying? >>> >> >> John: >> >> I take it these ECC errors *may* have been happening for some time. What >> has changed is the OS now polls for the errors and reports them. >> >> > Yes, we enabled MCA by default in 8.1-RELEASE. Is there some reason that it is only available for i386 and not for amd64? Linux has something called mcelog, for machine check errors, which sounds similar and is available for amd64. -- Carl Johnson carlj@peak.org