Just had one of hour webservers flag as down here and on
investigation the machine seems to be struggling due to
a hung vmdaemon process.
top is reporting vmdaemon as using a constant 55.57% CPU
yet CPU time is not increasing:-
last pid: 36492; load averages: 0.04, 0.05, .11 up 89+19:53:21
14:36:08
223 processes: 9 running, 201 sleeping, 13 waiting
CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 644M Active, 2780M Inact, 480M Wired, 249M Cache, 214M Buf, 3759M Free
Swap: 4096M Total, 537M Used, 3559M Free, 13% Inuse
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 1 171 ki31 0K 16K CPU7 7 2116.4 100.00% idle: cpu7
12 root 1 171 ki31 0K 16K CPU6 6 2059.5 100.00% idle: cpu6
13 root 1 171 ki31 0K 16K CPU5 5 2029.3 100.00% idle: cpu5
14 root 1 171 ki31 0K 16K CPU4 4 1977.8 100.00% idle: cpu4
15 root 1 171 ki31 0K 16K CPU3 3 1912.0 100.00% idle: cpu3
16 root 1 171 ki31 0K 16K CPU2 2 1835.2 100.00% idle: cpu2
17 root 1 171 ki31 0K 16K CPU1 1 1763.1 100.00% idle: cpu1
18 root 1 171 ki31 0K 16K RUN 0 1727.6 100.00% idle: cpu0
37 root 1 20 - 0K 16K psleep 5 0:56 55.57% vmdaemon
60198 www 1 4 0 98M 13516K sbwait 2 35:21 1.46% httpd
60264 www 1 4 0 133M 9248K sbwait 0 21:21 0.39% httpd
30 root 1 -68 - 0K 16K - 7 18.3H 0.00% em1 taskq
29 root 1 -68 - 0K 16K - 6 330:21 0.00% em0 taskq
41 root 1 20 - 0K 16K syncer 1 212:42 0.00% syncer
21 root 1 -44 - 0K 16K WAIT 0 201:02 0.00% swi1: net
19 root 1 -32 - 0K 16K WAIT 0 120:15 0.00% swi4: clock
22 root 1 44 - 0K 16K - 5 73:00 0.00% yarrow
I've tried to ktrace the process and it produced nothing, also tried
gdb and it failed to attach. Is there anything else I can try before
we reboot the machine to help determine what the problem is?
Regards
Steve
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