Swap filling up, apps crashing

[Nick Fenger]

 Hello,

I'm having an issue where swap fills to 100% (0Kb free) after
running applications such as openoffice and chrome/firefox but does not
decrease substantially when the applications are closed. Ultimately when
swap reaches 100%, browser plugins start crashing (java, flash).

The configuration is a mostly out-of-the-box fat-clients (32Bit 3.2Ghz 512MB
intel video systems) with a Ubuntu 10.04 Lucid image I built with the
--fat-client option of ltsp-build-client on a 64Bit Server. I've made no
customizations is Lts.conf.
Thank you for your support,

dmesg of a firefox crash:

[  791.900521] 67650 total pagecache pages
[  791.900523] 3714 pages in swap cache
[  791.900526] Swap cache stats: add 45890, delete 42176, find 2827/4388
[  791.900529] Free swap  = 20kB
[  791.900531] Total swap = 124688kB
[  791.902305] 128768 pages RAM
[  791.902308] 0 pages HighMem
[  791.902310] 4080 pages reserved
[  791.902313] 98904 pages shared
[  791.902315] 86898 pages non-shared
[  791.902319] Out of memory: kill process 2105 (run-mozilla.sh) score 95346
or a child
[  791.902325] Killed process 2122 (firefox-bin)
[  791.912197] firefox-bin invoked oom-killer: gfp_mask=0x200da, order=0,
oom_adj=0
[  791.912203] firefox-bin cpuset=/ mems_allowed=0
[  791.912208] Pid: 2133, comm: firefox-bin Not tainted 2.6.32-24-generic
#42-Ubuntu

dmesg of Java crash (in chrome)

[ 4227.264993] Swap cache stats: add 87890, delete 87714, find 9497/15136
[ 4227.264996] Free swap  = 0kB
[ 4227.264999] Total swap = 124632kB
[ 4227.267225] 128768 pages RAM
[ 4227.267230] 0 pages HighMem
[ 4227.267232] 4131 pages reserved
[ 4227.267235] 100756 pages shared
[ 4227.267238] 94391 pages non-shared
[ 4227.267244] Out of memory: kill process 2609 (chromium-browse) score
987621376 or a child
[ 4227.267250] Killed process 2619 (java)
[ 4333.230684] chromium-browse invoked oom-killer: gfp_mask=0x280da,
order=0, oom_adj=10
[ 4333.230692] chromium-browse cpuset=/ mems_allowed=0
[ 4333.230698] Pid: 2705, comm: chromium-browse Not tainted
2.6.32-24-generic #42-Ubuntu
-- 
Nick Fenger
-Information Technology

Trillium Charter School
5420 N. Interstate Ave
Portland, OR 97217
(503) 285-3833
http://www.trilliumcharterschool.org
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