From: trevor.mclachlan@richemont.com
Date: Tue Feb 17 2004 - 06:08:33 EST
Hi All,
While doing a top last week, I managed to capture a spike of high CPU
usage, which causes me concern.
Being fairly new to preformance management, I was wondering if anyone could
give me any direction on this. Have search various sites about this, but
not finding anything directed at my problem.
I am running Solaris 8 (10/00) on an E250, Dual 400mhz CPU, 2gb Mem, Apache
1.3.27 webserver.
This is the top output -
last pid: 16121; load averages: 0.54, 0.32, 0.29
16:09:53
273 processes: 262 sleeping, 2 running, 1 zombie, 6 stopped, 2 on cpu
CPU states: 0.0% idle, 84.9% user, 15.1% kernel, 0.0% iowait, 0.0% swap
Memory: 2048M real, 373M free, 1061M swap in use, 2435M swap free
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
16097 nobody 3 0 0 19M 8600K run 0:09 17.80% httpd
13498 nobody 3 0 0 21M 13M cpu/0 0:14 13.93% httpd
16075 nobody 3 20 0 20M 10M sleep 0:01 2.65% httpd
13503 nobody 3 28 0 19M 8680K run 0:06 0.61% httpd
405 mysql 38 58 0 18M 13M sleep 334:49 0.49% mysqld
15993 root 1 58 0 2808K 1816K cpu/1 0:01 0.35% top
13501 nobody 3 58 0 20M 12M sleep 0:06 0.26% httpd
16076 nobody 3 58 0 16M 3952K sleep 0:00 0.26% httpd
2164 sht_live 101 58 0 142M 131M sleep 110:14 0.25% java
14409 nobody 3 58 0 18M 7952K sleep 0:04 0.24% httpd
422 root 12 58 0 9208K 8776K sleep 61:41 0.18% mibiisa
22158 nobody 3 58 0 19M 9000K sleep 1:00 0.14% httpd
22153 nobody 3 58 0 19M 8776K sleep 0:50 0.13% httpd
15270 nobody 3 58 0 17M 6720K sleep 0:02 0.10% httpd
3319 nobody 3 58 0 20M 9992K sleep 0:26 0.08% httpd
I am running sar on this machine every 15mins during the day, and this was
the sar output for that day -
08:00:01 %usr %sys %wio %idle
08:15:00 3 4 5 88
08:30:00 3 5 5 87
08:45:00 3 4 5 87
09:00:00 3 5 10 82
09:15:01 4 5 6 86
09:30:00 3 5 5 87
09:45:01 4 5 5 86
10:00:00 4 5 5 86
10:15:00 3 4 5 87
10:30:00 4 5 5 86
10:45:00 4 5 6 85
11:00:00 3 5 5 87
11:15:00 4 5 6 86
11:30:00 4 5 6 84
11:45:00 4 4 5 86
12:00:00 6 5 5 84
12:15:00 6 7 7 81
12:30:00 4 6 23 67
12:45:00 4 5 11 80
13:00:00 4 5 12 79
13:15:00 5 6 19 70
13:30:00 4 5 5 87
13:45:01 4 4 5 87
14:00:00 5 5 5 85
14:15:00 5 6 6 83
14:30:01 5 5 6 84
14:45:00 10 7 15 69
15:00:01 5 5 6 85
15:15:01 6 5 6 82
15:30:00 6 6 6 82
15:45:01 8 6 7 80
16:00:01 5 6 6 83
16:15:00 6 6 6 83
16:30:00 6 5 6 83
16:45:00 6 5 6 82
17:00:01 4 5 5 85
17:15:00 5 5 5 85
17:30:01 4 5 5 86
17:45:00 8 6 8 78
18:00:00 2 4 4 90
18:15:00 3 4 5 88
18:30:01 3 4 5 88
18:45:00 3 4 4 89
Average 5 5 7 84
This must have happened for only for a very short time as we didn't notice
any slowness, or had no complaints
Any info on where to start looking and some methods to use for this not
happening again would be appreciated
Kind regards and thanks in advance.
Trevor McLachlan
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