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Date:      Thu, 16 Jan 2003 21:54:38 +0100
From:      Bernd Walter <ticso@cicely8.cicely.de>
To:        Mike Tibor <tibor@tibor.org>
Cc:        Andrew Gallatin <gallatin@cs.duke.edu>, Trevor Johnson <trevor@jpj.net>, Wilko Bulte <wkb@freebie.xs4all.nl>, Kris Kennaway <kris@obsecurity.org>, alpha@FreeBSD.ORG, current@FreeBSD.ORG
Subject:   Re: unexpected machine check on 5.0 alpha
Message-ID:  <20030116205438.GA62457@cicely8.cicely.de>
In-Reply-To: <20030116114223.L27084-100000@xena.mikey.net>
References:  <15910.50391.473362.53094@grasshopper.cs.duke.edu> <20030116114223.L27084-100000@xena.mikey.net>

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On Thu, Jan 16, 2003 at 11:48:12AM -0900, Mike Tibor wrote:
> On Thu, 16 Jan 2003, Andrew Gallatin wrote:
> 
> (I wrote: )
> >  > I believe a 670 machine check can also result from a read of a
> >  > non-existent I/O space.  I'm not a programmer, but could that be the
> >  > problem here?
> >
> > No, that's a 660. (system machine check).
> > A 670 is much more likely to be bad ram, bad cache, bad CPU, etc.
> > Its not always overheating.
> 
> Hmm... well, I got that from Jay Estabrook (works at DEC/Compaq/HP) via
> the axp-list@redhat.com.  The archived message is here:

Single bit errors on ram are non fatal and reported by FreeBSD as
processor correctable error.
In the most cases you don't get fatal memory errors without some
non-fatal errors.
You may want to remove and reinsert the simms.

-- 
B.Walter              COSMO-Project         http://www.cosmo-project.de
ticso@cicely.de         Usergroup           info@cosmo-project.de


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