From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Pt15d-0003uH-Hv for garchives@archives.gentoo.org; Fri, 25 Feb 2011 17:04:25 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 41B231C034 for ; Fri, 25 Feb 2011 17:04:25 +0000 (UTC) Received: from mta-1.ms.rz.rwth-aachen.de (mta-1.ms.rz.RWTH-Aachen.DE [134.130.7.72]) by pigeon.gentoo.org (Postfix) with ESMTP id D469C1C01A for ; Fri, 25 Feb 2011 16:56:23 +0000 (UTC) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-disposition: inline Content-type: text/plain; charset=us-ascii Received: from ironport-out-1.rz.rwth-aachen.de ([134.130.5.40]) by mta-1.ms.rz.RWTH-Aachen.de (Sun Java(tm) System Messaging Server 6.3-7.04 (built Sep 26 2008)) with ESMTP id <0LH600AZIN1ZHNG0@mta-1.ms.rz.RWTH-Aachen.de> for gentoo-user@lists.gentoo.org; Fri, 25 Feb 2011 17:56:23 +0100 (CET) X-IronPort-AV: E=Sophos;i="4.62,226,1297033200"; d="scan'208";a="96693654" Received: from relay-2.ms.rz.rwth-aachen.de (HELO relay.rwth-aachen.de) ([134.130.7.75]) by ironport-in-1.rz.rwth-aachen.de with ESMTP; Fri, 25 Feb 2011 17:56:23 +0100 Received: from numa-i.igpm.rwth-aachen.de (numa-i.igpm.RWTH-Aachen.DE [134.130.161.252]) by relay.rwth-aachen.de (8.14.4+Sun/8.13.8/1) with ESMTP id p1PGuNOu018510 for ; Fri, 25 Feb 2011 17:56:23 +0100 (CET) Received: from numa-i (localhost [127.0.0.1]) by numa-i.igpm.rwth-aachen.de (Postfix) with ESMTP id 504F232D0 for ; Fri, 25 Feb 2011 17:56:27 +0100 (CET) Date: Fri, 25 Feb 2011 17:56:27 +0100 From: Helmut Jarausch Subject: Re: [gentoo-user] Random reboots. Where to start? To: gentoo-user@lists.gentoo.org In-reply-to: <4D67CBC0.4000604@gmail.com> X-Mailer: Balsa 2.4.9 Message-id: <1298652987.23841.0@numa-i> X-Archives-Salt: X-Archives-Hash: efb73a3c450c2996dd8df8a12295d468 On 02/25/2011 04:33:20 PM, Dale wrote: > Well, I think my machine is possessed or something. I'm getting > random > reboots here. When it does this, it is like hitting the reset > button. > > It is sitting on the grub screen when it does this. I noticed the > first > time the other day and this was before adding the extra memory. I > seemed to be stable at 4Gbs but I seem to be rebooting at random. I > ran > memtest yesterday, it checked fine. It didn't find a error but it > looked like it was only testing part of it. Memtest recognizes all > 16Gbs on the last run but it didn't seem to be testing it all. Is > there > a trick to getting it to test the whole thing? > Dale, I have better experience with sys-apps/memtester for catching memory errors - though running it over night. You can tell it what to test. Furthermore I had one machine (an AMD Phenom II) where I got random errors though all memory tests went through without a problem. I suspected a cache coherence bug since this was quad core processor. Once, I have replaced this CPU only, i.e. with the same memory, the spook was over. Therefore, if you have a multi-core CPU, run memtester simultaneously (on different parts of the memory) as many times as you have cores. I hope, this helps, Helmut.