From: Beck, Joseph (jbeck@seic.com)
Date: Thu Jun 21 2007 - 13:42:09 EDT
Quick question on "best" way to get a breakdown of memory
utilization...not just prstat -c size
Rather this is more of a sizing request. In past, I've used pmap -x
<pid> on a box & wrote a perl script to parse thru and group the
utilization and also give consideration to the shared mem column. It
wasn't real complex but it grouped a bunch of info & then req'd a bit of
manual calculating.
Its been a little while, I believe this was in the 2.6/7 timeframe.
Now, I have this need & I see that pmap -x doesn't even have a shared
column output.
Can anyone suggest best cmd to use for this or refer me another
resource/tool, no budget for any commercial tool yet...TQ is in budget
for next year.
Also, in past it was difficult to judge the actual free memory available
on a box due to the fact that file system cache took advantage of a
large % of any free memory (at least this is what I was told) Is there
a way to see the size of file system cache?
And is the following top output accurate?
Memory: 32G real, 2753M free, 36G swap in use, 21G swap free
Ultimately this box is a tuxedo application server & we're trying to
determine if we can add another prod environment to this server without
adding more memory.
Any inputs or pointers are greatly appreciated.
Joe Beck Ciber Inc. - a consultant to SEI One Freedom Valley Drive/ 100
Cider Mill Road| Oaks, PA 19456 | p: 610.676.2258 | jbeck@seic.com
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