Date: Wed, 16 Jul 2008 10:01:53 -0700 From: "Kevin Oberman" <oberman@es.net> To: "John Sullivan" <john@basicnets.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: Fresh 7.0 Install: Fatal Trap 12 panic when put under load Message-ID: <20080716170153.2FF6A45047@ptavv.es.net> In-Reply-To: Your message of "Wed, 16 Jul 2008 09:38:26 BST." <A6F1ACCEE35A4BC49FC9DFA561ED1131@emea.hubersuhner.net>
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--==_Exmh_1216227713_38076P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > From: "John Sullivan" <john@basicnets.co.uk> > Date: Wed, 16 Jul 2008 09:38:26 +0100 > > > > Could be memory, but I'd also suggest looking at > > temperatures. I've had overheating systems produce lots of > > such errors. > > Temperature is fine - it never get's that hot here in the UK ;-) > Seriously, I put my hand in the box, touched a few heat sync's, it is > not running hot enough to cause a problem. The BIOS reports that all > is well with the temperature inside the box of just over 30 degrees C. It's not the heat sink temperature that I am concerned with. It is the temperature of the CPU and (if it's not AMD) the north bridge. I have encountered several cases of improper heat sink installation which resulted in poor transfer from the chip to the heat sink. Cleaning and properly applying heat transfer grease made a huge difference. You say that BIOS is reporting a 30C temperature. If this is the CPU temperature when the CPU is busy, I don't believe it. I have a system where the BIOS (via ACPI) reports the temperature as 35C, regardless of how long the system has been under power or what it is doing. I'm not at all sure that the problem is thermal, but I don't think you should dismiss the possibility too quickly. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1216227713_38076P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFIfimBkn3rs5h7N1ERAi8uAKCNU4O//bGOFLRrPru+lkvXoQoyfACfYEx4 KUSGSuUMwcsX/GscV9YR8+o= =wLbU -----END PGP SIGNATURE----- --==_Exmh_1216227713_38076P--
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