Re: Linux Memory Accounting
- From: "Jared Still" <jkstill@xxxxxxxxx>
- To: kevinc@xxxxxxxxxxxxx
- Date: Mon, 2 Oct 2006 14:04:08 -0700
Thanks, though I think you knew what I meant. :)
To be more precise in what I am asking:
--------------------------------------
According to the ps man page:
rss RSS resident set size, the non-swapped physical
memory that a task has used (in kiloBytes).
(alias rssize, rsz).
What's interesting is that summing RSS for all Oracle processes
on the server in question (RH ES 4 64 Bit) yield 25 gig of RAM.
The server has only 12 gig of RAM.
Here's the ps command:
ps -fywluoracle | awk '{ mem=mem+$8 } END{ mem=mem*1024; print "bytes: ",
mem}'
My question is: Does someone here know what is really being reported by
RSS?
Or is it just untrustworthy?
--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
Sample output
[root@ordb02 bin]# ps -fywluoracle | head
S UID PID PPID C PRI NI RSS SZ WCHAN STIME TTY TIME
CMD
S oracle 23792 1 0 76 0 17196 135561 - Sep04 ? 00:01:27
ora_pmon_pr02
S oracle 23794 1 0 76 0 15340 135266 - Sep04 ? 00:00:14
ora_psp0_pr02
S oracle 23796 1 0 76 0 15408 135266 - Sep04 ? 00:00:00
ora_mman_pr02
S oracle 23798 1 0 76 0 120164 147379 - Sep04 ? 00:15:59
ora_dbw0_pr02
S oracle 23800 1 0 76 0 24016 139159 - Sep04 ? 00:14:57
ora_lgwr_pr02
S oracle 23802 1 0 76 0 27228 135923 - Sep04 ? 00:03:47
ora_ckpt_pr02
S oracle 23804 1 0 76 0 239228 135937 - Sep04 ? 00:03:41
ora_smon_pr02
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