CPU stats discrepancy
Michael Green
mishagreen at gmail.com
Sun Mar 6 15:09:40 UTC 2005
Can someone explain the output from 'top' below? There is only one
process that eats 50% of one CPU but both CPUs appear busy with
something...
We are talking about Dual Xeon 1.5G computer
Additional info:
math10-lx:~->1% cat /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 1)
math10-lx:~->2% uname -a
Linux math10-lx 2.4.21-9.ELsmp #1 SMP Thu Jan 8 17:08:56 EST 2004 i686
i686 i386 GNU/Linux
math10-lx:~->3% free -m
total used free shared buffers cached
Mem: 2013 1638 374 0 180 548
-/+ buffers/cache: 910 1102
Swap: 1984 1091 892
math10-lx:~->4% top
16:32:44 up 137 days, 55 min, 13 users, load average: 1.71, 1.68, 1.68
103 processes: 102 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 76.7% 0.0% 16.3% 0.0% 0.0% 0.0% 6.7%
cpu00 81.0% 0.0% 14.1% 0.1% 0.0% 0.0% 4.5%
cpu01 72.5% 0.0% 18.5% 0.0% 0.0% 0.0% 8.9%
Mem: 2061612k av, 1673672k used, 387940k free, 0k shrd, 184476k buff
1168060k actv, 71124k in_d, 20796k in_c
Swap: 2032212k av, 1117800k used, 914412k free 561440k cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
3877 ital 16 0 410M 410M 11148 S 49.9 20.3 300:10 0 java
7287 marinao 15 0 156M 37M 20464 S 0.1 1.8 1125m 0 matlab
6792 root 15 0 1104 1104 748 R 0.1 0.0 0:00 1 top
1 root 15 0 492 464 436 S 0.0 0.0 2:39 1 init
2 root RT 0 0 0 0 SW 0.0 0.0 0:00 0 migration/0
3 root RT 0 0 0 0 SW 0.0 0.0 0:00 1 migration/1
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