From owner-freebsd-alpha@FreeBSD.ORG Thu Feb 7 15:40:33 2008 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4DBF216A473 for ; Thu, 7 Feb 2008 15:40:33 +0000 (UTC) (envelope-from mexas@bristol.ac.uk) Received: from diri.bris.ac.uk (diri.bris.ac.uk [137.222.10.112]) by mx1.freebsd.org (Postfix) with ESMTP id 034D913C448 for ; Thu, 7 Feb 2008 15:40:32 +0000 (UTC) (envelope-from mexas@bristol.ac.uk) Received: from seis.bris.ac.uk ([137.222.10.93]) by diri.bris.ac.uk with esmtp (Exim 4.67) (envelope-from ) id 1JN8rR-0002Nb-PJ; Thu, 07 Feb 2008 15:40:31 +0000 Received: from mech-aslap33.men.bris.ac.uk ([137.222.184.33]) by seis.bris.ac.uk with esmtp (Exim 4.67) (envelope-from ) id 1JN8rQ-000246-Uy; Thu, 07 Feb 2008 15:40:25 +0000 Received: from mech-aslap33.men.bris.ac.uk (localhost [127.0.0.1]) by mech-aslap33.men.bris.ac.uk (8.14.2/8.14.2) with ESMTP id m17FeOLu009716; Thu, 7 Feb 2008 15:40:24 GMT (envelope-from mexas@bristol.ac.uk) Received: (from mexas@localhost) by mech-aslap33.men.bris.ac.uk (8.14.2/8.14.2/Submit) id m17FeOHG009715; Thu, 7 Feb 2008 15:40:24 GMT (envelope-from mexas@bristol.ac.uk) X-Authentication-Warning: mech-aslap33.men.bris.ac.uk: mexas set sender to mexas@bristol.ac.uk using -f Date: Thu, 7 Feb 2008 15:40:24 +0000 From: Anton Shterenlikht To: ticso@cicely.de Message-ID: <20080207154024.GA9605@mech-aslap33.men.bris.ac.uk> Mail-Followup-To: ticso@cicely.de, freebsd-alpha@freebsd.org References: <20080206121738.GA91825@mech-aslap33.men.bris.ac.uk> <20080207145311.GF24583@cicely12.cicely.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080207145311.GF24583@cicely12.cicely.de> User-Agent: Mutt/1.4.2.3i X-Spam-Score: -1.4 X-Spam-Level: - Cc: freebsd-alpha@freebsd.org Subject: Re: DS10L - "processor correctable error" X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Feb 2008 15:40:33 -0000 On Thu, Feb 07, 2008 at 03:53:12PM +0100, Bernd Walter wrote: > On Wed, Feb 06, 2008 at 12:17:38PM +0000, Anton Shterenlikht wrote: > > > > "Warning: received processor correctable error." > > > > What is the meaning of this warning? Something wrong with hardware? > > This is an ECC memory correction. > It is OK to see it once in a while, since even 100% working DRAM has > failures from time to time (called softerror rate) - therefor the need > to have ECC in important systems > If however you see a lot of them it is time to replace the faulty > memory. Bernd, thank you. Can I know which DIMM (DS10L has 2 DIMMs) is faulty? If I run SRM memexer I get: >>>show_status ID Program Device Pass Hard/Soft Bytes Written Bytes Read -------- ------------ ------------ ------ --------- ------------- ------------- 00000001 idle system 0 0 0 0 0 000003ab memtest memory 6 0 0 5586812928 5586812928 >>> Processor correctable error through vector 630. Machine Check Logout Frame @ 0x6000 Code = 0x86 Alpha 21264 IPRs (CPU 0): I_STAT: 0000000000000000 DC_STAT: 000000000000000C C_ADDR: 00000000296287C0 DC1_SYNDROME: 0000000000000000 DC0_SYNDROME: 000000000000008F C_STAT: 0000000000000003 C_STS: 000000000000000A MM_STAT: 0000000000000000 >>> The message appears approx. once every other pass. The address is always the same. thanks anton -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423