Re: high memory used sessions
- From: J.Velikanovs@xxxxxxxx
- Date: Wed, 22 Sep 2004 09:23:08 +0300
If you able to get 100GB RAM on Sun, try to get a little bit time and
read:
http://www.sun.com/sun-on-net/performance/vmsizing.pdf
Possible, then you will sell 1/2 of RAM, because your not using it anyway
:)
On 09.09.2004 13:28:15 oracle-l-bounce wrote:
>Dinesh,
>I would like to recommend you to read this paper:
>http://www.sun.com/sun-on-net/performance/vmsizing.pdf
>
>This document explains a lot about Unix memory structures architecture
and
>tools you can use to diagnose issues.
>Whiten by Sun, but apply to any UNIX platform.
>
>To get quicker to solution, On Solaris platform try /usr/proc/bin/pmap
><pid>
>
>Jurijs
Jurijs
+371 9268222 (+2 GMT)
============================================
Thank you for teaching me.
http://otn.oracle.com/ocm/jvelikanovs.html
"Kommareddy, Srinivas (GE Healthcare, non-ge)"
<Srinivas.Kommareddy@xxxxxxxxxx>
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
22.09.2004 09:00
Please respond to Srinivas.Kommareddy
To: <oracle-l@xxxxxxxxxxxxx>
cc:
Subject: high memory used sessions
Hi all,
OS: solaris 5.9
We have some issues with the high memory usage on solaris box sometimes.
The top command returns the following:
last pid: 27551; load averages: 4.98, 4.38, 4.71
05:51:32
426 processes: 415 sleeping, 4 zombie, 7 on cpu
CPU states: 40.3% idle, 20.6% user, 9.0% kernel, 30.1% iowait, 0.0%
swap
Memory: 64G real, 44G free, 10G swap in use, 50G swap free
Sometimes, I see the free memory is very less, say 100 M or so...
How to find out which sessions are using high memory.
I can see the sessions which are using high cpu,
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
7447 oracle 1 0 0 8178M 8144M sleep 44:44 1.92% oracle
28974 oracle 1 30 0 8089M 8055M sleep 108:51 1.57% oracle
6447 oracle 1 40 0 8079M 8044M sleep 1:06 0.91% oracle
16648 oracle 1 31 0 8165M 8121M sleep 524:28 0.76% oracle
but how to find which OS thread is using more memory. (because I have
several databases on one box and I cant see login and check in each db
)
Could anybody throw somelight on this.
Thanks in advance,
Srinivas
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