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Bug 129156 - OOM killer terminating apps while there's still free memory
OOM killer terminating apps while there's still free memory
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel (Show other bugs)
x86_64 Linux
medium Severity medium
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2004-08-04 11:40 EDT by Joshua Baker-LePain
Modified: 2007-11-30 17:07 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-08-04 15:17:25 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Memory graph created by Ganglia (11.26 KB, image/gif)
2004-08-04 11:41 EDT, Joshua Baker-LePain
no flags Details
CPU graph created by Ganglia. (10.66 KB, image/gif)
2004-08-04 11:42 EDT, Joshua Baker-LePain
no flags Details

  None (edit)
Description Joshua Baker-LePain 2004-08-04 11:40:00 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115

Description of problem:
I have several compute nodes with 6GB of RAM and 2GB of swap, running
primarily ls-dyna, a commercial FEM code compiled for AMD64.  On one
of these, a simulation was actively running with a VSS of 
2274180 and a RSZ of 652240 (almost a quarter of it is swapped out!).
 Another user tried to fire up a simulation that wanted 3371384 of
VSS.    The OOM killer swiftly terminated it.  Should that happen? 
Any way to make it not happen?

Version-Release number of selected component (if applicable):

How reproducible:
Didn't try

Additional info:

I've set /proc/sys/vm/inactive_clean_percent to 30 in response to bug
115438 and /proc/sys/vm/pagecache to "1 15 15" in response to bug 118152.
Comment 1 Joshua Baker-LePain 2004-08-04 11:41:01 EDT
Created attachment 102419 [details]
Memory graph created by Ganglia
Comment 2 Joshua Baker-LePain 2004-08-04 11:42:15 EDT
Created attachment 102420 [details]
CPU graph created by Ganglia.
Comment 3 Joshua Baker-LePain 2004-08-04 15:17:25 EDT
Upon further investigation, there may have been enough memory pressure
on the system to trigger OOM after all.  I'm going to close this,
since I can't be completely clear on what happened.  Sorry for the noise.

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