Date: Fri, 15 Feb 2002 13:29:15 +0000 From: David Malone <dwmalone@maths.tcd.ie> To: Kris Kennaway <kris@obsecurity.org> Cc: charon@seektruth.org, Baldur Gislason <baldur@foo.is>, freebsd-stable@FreeBSD.ORG Subject: Re: Spontanious reboots Message-ID: <20020215132915.GA7865@walton.maths.tcd.ie> In-Reply-To: <20020215002655.A19761@xor.obsecurity.org> References: <02021417352704.04045@germanium> <20020214094353.A12018@xor.obsecurity.org> <200202150311.g1F3Brh29217@midway.uchicago.edu> <20020215002655.A19761@xor.obsecurity.org>
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On Fri, Feb 15, 2002 at 12:26:55AM -0800, Kris Kennaway wrote: > In particular, memtest isn't a foolproof method of testing > memory..there are just too many things it cannot pick up. Physically > swap out the memory..it's the only way to eliminate that possibility. For example... We had a system which occasionally exhibited memory corruption (bit twiddling in certain parts of 4KB pages) and spent months trying to track it down. It happily passed a few days of running memtest. After replacing each bit of hardware in turn, we eventually replaced the motherboard and the problem went away. As far as I could see, the main difference between the working and non-working motherboard was a heat sink on top of the memory controler chip. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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