From owner-freebsd-stable@FreeBSD.ORG Sat Dec 25 13:56:37 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 857FD106566C for ; Sat, 25 Dec 2010 13:56:37 +0000 (UTC) (envelope-from pluknet@gmail.com) Received: from mail-qy0-f175.google.com (mail-qy0-f175.google.com [209.85.216.175]) by mx1.freebsd.org (Postfix) with ESMTP id 39FB88FC13 for ; Sat, 25 Dec 2010 13:56:37 +0000 (UTC) Received: by qyk8 with SMTP id 8so7980375qyk.13 for ; Sat, 25 Dec 2010 05:56:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=+IP78LBrl3RHkRXp3Aik/OlBOdEAggYSW65SPi33RJM=; b=fAFgXnfWeDuQlqOXKSSCaWFgdRcXkq1O5y+XaPm1n+DaPUYD7ZsiqT9POA81KS78Tx fTsOq5LQ+G24OtuumQpvC+E9DidXX369t8Mq+bGm/HMVV/6gpW4olA8hA9oqiaPcuenF 16kSEdIpUj8XuWlc1Tnp5GWXWogw8ObhxG4ZQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=W0V+lw97+aokdSWZA/z++WXlaObse5zvMkYlhU960Jmj9+0R5lCNvJtnWXzmH4cIhM 1dgIQmlH1AuvsAq5ENmIohzVzjMDp1nVL4DSIpiUx/4bHTi3bsu//WGgLJQrGoumf1Wq xSA8yPO2eMswAyOuts9BKvdtuptafM0lc9vm8= MIME-Version: 1.0 Received: by 10.229.248.198 with SMTP id mh6mr9410348qcb.5.1293283658104; Sat, 25 Dec 2010 05:27:38 -0800 (PST) Received: by 10.229.39.147 with HTTP; Sat, 25 Dec 2010 05:27:37 -0800 (PST) In-Reply-To: <87r5d6e9vb.fsf@oak.localnet> References: <4D11F1F5.7050902@quip.cz> <201012220957.26854.jhb@freebsd.org> <4D13A579.8090004@langille.org> <87vd2iepkv.fsf@oak.localnet> <87r5d6e9vb.fsf@oak.localnet> Date: Sat, 25 Dec 2010 16:27:37 +0300 Message-ID: From: Sergey Kandaurov To: Carl Johnson Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-stable@freebsd.org 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: Sat, 25 Dec 2010 13:56:37 -0000 On 25 December 2010 07:48, Carl Johnson wrote: > Alan Cox writes: > >> On Fri, Dec 24, 2010 at 5:08 PM, Carl Johnson wrote: >> >>> 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 0xd40e400000000= 833 >>> >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Global Cap 0x0000000000000105, >>> >>>> Status 0x0000000000000000 >>> >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Vendor "AuthenticAMD", ID 0x40= f33, >>> >>>> APIC ID 0 >>> >>>> Dec 21 12:42:26 kavkaz kernel: MCA: CPU 0 COR OVER BUSLG Source DR= D >>> >>>> Memory >>> >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Address 0x236493c0 >>> >>>> >>> >>> >>> >>> You are getting corrected ECC errors in your RAM. =A0You see them o= nce an >>> >>> hour >>> >>> because we poll the machine check registers once an hour. =A0If thi= s >>> 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? =A0Linux has something called mcelog, for machine check errors, >>> which sounds similar and is available for amd64. >>> >>> >> Perhaps I'm misunderstanding your question, but our MCA driver is suppor= ted >> and enabled by default on both i386 and amd64. > > Thanks, it appears that I misunderstood. =A0I ran whereis and found > /usr/src/sbin/mca and didn't find it on my amd64 system. =A0I do see it i= n > my sysctl listing now that I look there. > I guess that's designed for ia64 only (at least there's no hw.mca.first on other arches). --=20 wbr, pluknet