Re: Strange system behavior

[buhrow%lothlorien.nfbcal.org@localhost (Brian Buhrow)]

        Hello.  Howevr, memtest86 will possibly find power supply problems
with its memory fade tests.  Warning, however, these tests take a long time
to complete, and if you don't see problems with memory fade, the way it
reports the results of such tests is non-intuitive.
-Brian

On Sep 22, 12:00am, David Laight wrote:
} Subject: Re: Strange system behavior
} On Mon, Sep 20, 2010 at 06:16:31PM -0400, Perry E. Metzger wrote:
} > On Mon, 20 Sep 2010 13:21:24 -0700 (PDT) Paul Goyette
} > <paul%whooppee.com@localhost> wrote:
} > > (Resending without most of the original attachments, since that
} > > seems to have exceeded a message-size limit!)
} > > 
} > > 
} > > I have a new machine in my farm, and it is exhibiting some very
} > > strange behavior.
} > > 
} > > Essentially, this machine does nothing more than 'build.sh release"
} > > several times daily for port-amd64.  (See [1] for test results!)
} > > 
} > > About half of the time, the build fails due to some host utility
} > > receiving a "segmentation fault", and almost always it fails on the
} > > exact same command and at the exact same place in the build!  But
} > > re-running the failed command interactively succeeds without any
} > > problem.
} > 
} > I'm betting you have bad memory. Try running memtest86 for a couple
} > of days on the box and see what happens.
} 
} memtest86 won't find problems caused by power glitches when the disks
} are active.
} Nor anthing related to buggy cpu synchronisation instructions (are there
} any of those left in the latest batch of cpus?)
} 
}       David
} 
} -- 
} David Laight: david%l8s.co.uk@localhost
>-- End of excerpt from David Laight