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In-Reply-To: Message from Arjan van Leeuwen <avleeuwen@piwebs.com> 
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From: "Brian F. Feldman" <green@freebsd.org>
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Date: Wed, 03 Mar 2004 12:04:26 -0500
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cc: Poul-Henning Kamp <phk@phk.freebsd.dk>
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cc: Colin Percival <colin.percival@wadham.ox.ac.uk>
Subject: Re: detecting overheating processors? 
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Arjan van Leeuwen <avleeuwen@piwebs.com> wrote:
> On Tuesday 02 March 2004 16:03, Poul-Henning Kamp wrote:
> > In message <6.0.1.1.1.20040302124613.03af9150@imap.sfu.ca>, Colin Percival 
> writes:
> > >   I'm seeing something very interesting with FreeBSD Update: Lots
> > >of overheating processors.  FreeBSD Update operates by checking
> > >MD5 hashes, applying patches, and checking the MD5 hashes of the
> > >patched files.  If the file is wrong after patching, it downloads
> > >the entire file (and verifies its hash).
> >
> > In my experience MD5 does seem to be a really good CPU heater.
> >
> > Rather than putting any "burn-in-test" functionality into any one
> > program, be it sysinstall or otherwise, I would prefer to have a
> > program called "stress" which could be run at any time to test
> > hardware.
> 
> I believe sysutils/cpuburn can do exactly that.

It will generate a pretty maximal amount of heat, but won't actually tell 
you if something is "wrong" with the operations at that point.  Using the
"testing" mode of ports/math/mprime will, though.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\