What's using my system?

[Kirk Strauser]

I'm staring at "top" running on my 6.0-STABLE system.  It's my desktop
machine, and also serves a light web/mail load (including a few jails).
Basically, the system should be idle about 99% of the time when I'm not
actively doing something on it.  And yet it's not.

The CPU never gets above about 75% idle, but top never shows any processes
doing much of anything.  The "last pid" field only rarely increases, so I'm
relatively sure there's no processing forking off children that die too
quickly for top to notice them.

So, what could be using my CPU?  And other than top and tailing various
logfiles, what tools could help me find out?

Example top output:


last pid: 72475;  load averages:  0.26,  0.80,  1.69                                  up 28+21:59:16  13:26:30
214 processes: 4 running, 210 sleeping
CPU states: 14.7% user,  0.0% nice, 10.5% system,  3.9% interrupt, 70.9% idle
Mem: 752M Active, 186M Inact, 219M Wired, 63M Cache, 112M Buf, 23M Free
Swap: 4096M Total, 161M Used, 3934M Free, 3% Inuse

  PID USERNAME         THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
61660 root               1  96    0 89288K 74624K select  37:50  1.71% Xorg
61791 kirk               1  96    0 34704K 25600K select  12:17  1.12% kdeinit
61822 kirk               1  96    0 40616K 28980K select  14:55  1.03% kdeinit
68111 kirk               1  96    0 33584K 23292K select   0:16  0.15% kdeinit
 1525 ldap               3  20    0   134M  7136K kserel  80:59  0.00% slapd
61811 kirk               3  20  -76 16516K 10860K kserel  76:40  0.00% artsd
 1442 mysql              5  20    0 59576K  2752K kserel  44:14  0.00% mysqld
 1449 nagios             3  20    0  3900K  1228K kserel  37:36  0.00% nagios
61864 kirk               3  96    0 78260K 61128K RUN     25:34  0.00% amarokapp
83630 bind               1   4    0 12024K  8704K select  14:49  0.00% named
 1400 mailman            1   8    0  8828K  2716K nanslp  14:15  0.00% python2.3
 1403 mailman            1   8    0  8532K  4088K nanslp  13:35  0.00% python2.3
 1397 mailman            1   8    0  9016K  2700K nanslp  12:47  0.00% python2.3
 1398 mailman            1   8    0  8792K  5216K nanslp  12:26  0.00% python2.3

-- 
Kirk Strauser
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