Date: Tue, 23 Mar 2004 06:52:43 +0100
From: Willy Tarreau <willy@w.ods.org>
To: Sanjoy Mahajan <sanjoy@mrao.cam.ac.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Thinkpad 560X w/ 160MB memory (2.4.24 kernel): many segfaults
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References: <E1B5Y00-0006HW-00@coll.ra.phy.cam.ac.uk>
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Hi,

On Mon, Mar 22, 2004 at 10:34:24PM +0000, Sanjoy Mahajan wrote:
> To check that it wasn't the memory module itself, I ran the BIOS
> memory test (which passed) and also memtest86+ (no errors on 4 passes,
> which was more than 2 hours of testing).

I've had similar problems as you describe on completely different machines
due to a RAM compatibility problem. It was OK for memtest86, but burnBX
(from cpuburn) could detect the problem within 8 seconds. It seems to me
that this RAM had problems with its I/O in general, possibly with back-to-back
timings, etc... memtest86 is very good at detecting defective memory cells,
but not as good at detecting I/O problems it seems.

Cheers,
Willy

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