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Date:      Sat, 1 Apr 2000 04:59:43 +0200
From:      "Marinos J . Yannikos" <mjy@pobox.com>
To:        Gerhard Sittig <Gerhard.Sittig@gmx.net>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: 3.4-RELEASE; panic while paging
Message-ID:  <20000401045943.J31173@TK147108.telekabel.at>
In-Reply-To: <20000331223828.X24822@speedy.gsinet>; from Gerhard Sittig on Fri, Mar 31, 2000 at 10:38:28PM %2B0200
References:  <20000329175018.V15889@TK147108.telekabel.at> <20000329195354.A40356@walton.maths.tcd.ie> <20000330205606.B15889@TK147108.telekabel.at> <20000330200422.B16409@dogma.freebsd-uk.eu.org> <14564.50142.22563.853112@onceler.kcilink.com> <20000331223828.X24822@speedy.gsinet>

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> Which makes this fact bubble up immediately:  The case holds the
> power supply which is quite essential and can cause random
> failures when unstable (and yet this part is underestimated and
> made cheap to save some pennies -- and cause a lot of time and
> money to be wasted on the grief).

Do you have first-hand experience with power supply related problems?
I thought I had fixed all problems with my Athlon box by swapping board,
DIMMs and CPU, but after testing for a longer time I found that processes
would still die with signal 11. The easiest way to cause such failures is
an ApacheBench run with many concurrent dynamic requests (load >50) - after
a while, (usually 30-60 minutes) several apache processes will die in a short
period of time. I also had a prime factorization program crash after several
hours (the "mprime" program from www.mersenne.org/gimps). Does that sound
like a problem that could be related to the power supply? It's not one of
the PSUs recommended by AMD, but rated at 300W.

-mjy
-- 
***==> Marinos J. Yannikos <mjy@pobox.com>
***==> http://pobox.com/~mjy


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