Solaris 9 RAM and SWAP usage

From: Smoko Mr Charles (SMOKOCH@usmc-mccs.org)
Date: Wed Oct 19 2005 - 09:50:03 EDT


We have a Sun V1280 w/ 12 CPU's and 24G or RAM. It has Solaris 9 release
9/04 (s9s_u7wos_09 SPARC). I was looking at the system via the top utility
and I was wondering about a RAM usage. I don't think it's using RAM very
wisely and I wanted to get some opinions by some of the folks on this list.
The system is running Oracle and the HR application Peoplesoft. It has
several instances of both of them. The top command's output is listed
below.

The big question that I have is: Why would it be using 13G of SWAP, when it
has about 8.5 G of RAM free? Any thoughts? Any references on docs that
will explain memory management on Solaris better? Or even a better utility
than top.

Thanks in advance and I will summarize if I get an answer,
chuck

last pid: 271; load averages: 2.19, 2.13, 2.59
09:38:41
402 processes: 398 sleeping, 4 on cpu
CPU states: % idle, % user, % kernel, % iowait, % swap
Memory: 24G real, 8443M free, 13G swap in use, 13G swap free

   PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND
 29899 oracle 11 0 0 938M 887M cpu/9 2:00 6.35% oracle
 29901 oracle 11 0 0 940M 891M sleep 1:14 3.75% oracle
 29903 oracle 11 0 0 940M 890M cpu/11 1:15 3.71% oracle
   270 oracle 11 0 0 938M 891M sleep 0:10 2.89% oracle
 29897 oracle 11 21 0 938M 887M cpu/10 0:43 2.19% oracle
 25486 oracle 12 59 0 1062M 1020M sleep 16:57 0.86% oracle
   271 root 1 0 0 2600K 1808K cpu/17 0:00 0.09% top
 20538 peter 1 39 0 3432K 2192K sleep 0:56 0.09% top
 22335 nguyen 1 59 0 3416K 2192K sleep 0:35 0.07% top
 24991 oracle 14 59 0 951M 891M sleep 0:40 0.02% oracle
  8290 oracle 1 59 0 936M 891M sleep 10:42 0.02% oracle
  8352 oracle 1 59 0 936M 890M sleep 4:50 0.02% oracle
  8940 oracle 1 59 0 936M 891M sleep 3:25 0.02% oracle
 25515 oracle 1 59 0 936M 891M sleep 0:09 0.02% oracle
  8212 oracle 1 59 0 953M 904M sleep 3:09 0.01% oracle
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