Hi all,
Recently I facing problem with my AIX server. we experience slowness on performance. there are some application installed in this server such as : Oracle 10g database, control-m client agent, and some monitoring tools.
when we're facing the problem we're noticing that vmstat value a bit strange,
below are the output :
$ vmstat 5
System configuration: lcpu=12 mem=53248MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
1 0 5370602 22908 0 0 0 0 0 0 0 0 0 0 0 99 0
1 0 5370600 22910 0 0 0 0 0 0 0 0 0 3 0 97 0
1 0 5370594 22916 0 0 0 0 0 0 0 0 0 1 0 99 0
1 0 5370598 22911 0 0 0 0 0 0 0 0 0 0 0 99 0
1 0 5370596 22912 0 0 0 0 0 0 0 0 0 3 0 97 0
0 0 5370596 22912 0 0 0 0 0 0 0 0 0 0 0 99 0
0 0 5370593 22915 0 0 0 0 0 0 0 0 0 0 0 99 0
0 1 5370582 22926 0 0 0 0 0 0 0 0 0 3 1 95 1
0 0 5370589 22919 0 0 0 0 0 0 0 0 0 1 0 98 0
1 0 5370587 22921 0 0 0 0 0 0 0 0 0 2 0 98 0
1 0 5370586 22922 0 0 0 0 0 0 0 0 0 3 0 97 0
0 1 5370578 22298 0 0 0 0 0 0 0 0 0 1 0 97 2
0 0 5370579 22297 0 0 0 0 0 0 0 0 0 0 0 99 0
2 0 5370576 22299 0 0 0 0 0 0 0 0 0 3 0 97 0
1 0 5370573 22288 0 0 0 0 0 0 0 0 0 0 0 99 0
1 0 5370569 22150 0 0 0 0 0 0 0 0 0 1 0 98 1
1 0 5370570 22149 0 0 0 0 0 0 0 0 0 1 0 99 0
1 0 5370568 22151 0 0 0 0 0 0 0 0 0 2 0 98 0
0 0 5370536 22183 0 0 0 0 0 0 0 0 0 0 0 99 0
all value in faults section is 0 (in sy cs)
and my application starting to generate <defunct> process until reach maximum process for user. and force us to reboot the server to resolve this issue.
oracle 6426974 1 5 0:00 <defunct>
oracle 6431072 1 5 0:00 <defunct>
oracle 6435170 1 4 0:00 <defunct>
oracle 6439268 1 4 0:00 <defunct>
oracle 6443366 1 4 0:00 <defunct>
oracle 6447464 1 4 0:00 <defunct>
oracle 6451562 1 4 0:00 <defunct>
oracle 6455660 1 4 0:00 <defunct>
oracle 6459758 1 4 0:00 <defunct>
oracle 6463856 1 4 0:00 <defunct>
oracle 6467954 1 5 0:00 <defunct>
oracle 6472052 1 5 0:00 <defunct>
oracle 6476150 1 4 0:00 <defunct>
oracle 6480248 1 4 0:00 <defunct>
oracle 6484346 1 4 0:00 <defunct>
oracle 6488444 1 4 0:00 <defunct>
oracle 6492542 1 4 0:00 <defunct>
oracle 6496640 1 5 0:00 <defunct>
my questions are :
- is it normal for faults section in vmstat to have 0 value for all?
- what could possibly caused this issue?
- is there any log i could check?
appreciate if anyone could help me, because i'm newbie in AIX.
Thanks before.