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Please post the output of: cat /proc/meminfo /proc/slabinfo<br>
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Thanks,<br>
Herbert.<br>
<br>
On 12/12/11 9:58 AM, Kushnir, Michael (NIH/NLM/LHC) [C] wrote:
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<p class="MsoNormal">Good afternoon,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We just deployed our OCFS2 1.4 across 10
nodes. When we run a java process with lots of file creates
and updates, I see the system RAM fill up and the system start
swapping heavily. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve tried to counter by running “sync;
echo 3 > /proc/sys/vm/dropcaches” with practically no
effect. I’ve also set swappiness to 0 using “echo 0 >
/proc/sys/vm/swappiness”. But neither helps. I see RAM usage
increase until it is completely full. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Once I kill my process that is creating
files, the resident memory that is used by that process is
returned, but the other memory (held by whatever is
mysteriously filling up my RAM, I think OCFS2) is not
returned. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am running RHEL 5.7. I’ve tried the stock
RHEL kernel and UEK from Oracle. I’ve ruled out java memory
leaks. I do not see the same problem in a system running the
same process on a local file system. This makes me think it is
OCFS2 causing my problem.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please let me know if I can tune the FS to
make this stop.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Michael<o:p></o:p></p>
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