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July 2012

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Subject:
server crashing out of memory
From:
Orion Poplawski <[log in to unmask]>
Reply To:
Orion Poplawski <[log in to unmask]>
Date:
Tue, 17 Jul 2012 11:22:50 -0600
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Our SL6.2 KVM and nfs/backup server has been crashing frequently recently 
(starting around Fri 13th - yikes!) with Kernel panic - Out of memory and no 
killable processes.  The server has 48GB ram, 2GB swap, only about 15GB 
dedicated to VM guests.  I've tried bumping up vm.min_free_kbytes to 262144 to 
no avail.  Nothing strange is getting written to the logs before the crash.

Happening with both 2.6.32-220.23.1 and 2.6.32-279.1.1.

Anyone else seeing this?  Any other ideas?  I've set a serial console log to 
try to catch more information the next time it happens.

-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder Office                  FAX: 303-415-9702
3380 Mitchell Lane                       [log in to unmask]
Boulder, CO 80301                   http://www.nwra.com

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