us: user cpu time
sy: system cpu time
ni: user nice cpu time
id: idle cpu time
wa: io wait cpu time
hi: hardware irq (servicing hardware interrupts)
si: software irq (servicing software interrupts)
st: steal time (time in involuntary wait by virtual cpu while hypervisor is servicing another processor)


top komutu yanı sıra vmstat ve mpstat komutlarıda kullanılabilir:

mpstat
Linux 2.6.18-194.26.1.el5 (root.com) 06/27/2011

02:52:33 PM CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s
02:52:33 PM all 5.47 0.00 1.34 1.03 0.02 0.74 0.00 91.40 1083.34



vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
1 0 140 1457336 462312 976628 0 0 14 65 12 9 5 2 91 1 0


vmstat 1 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 140 1423236 462312 976672 0 0 14 65 12 9 5 2 91 1 0
1 0 140 1423236 462312 976672 0 0 0 0 1018 679 19 0 81 0 0
1 0 140 1422988 462312 976676 0 0 0 0 1040 4261 30 4 66 0 0
3 0 140 1422608 462320 976688 0 0 0 0 1117 1680 45 12 43 0 0
0 0 140 1422608 462324 976696 0 0 0 0 1089 505 20 5 75 0 0
0 0 140 1422608 462328 976588 0 0 0 1516 924 366 0 7 86 8 0
0 0 140 1422484 462328 976588 0 0 0 0 1051 2124 2 1 97 0 0
0 0 140 1422484 462328 976592 0 0 0 0 1013 239 0 0 100 0 0
0 0 140 1427328 462328 976592 0 0 0 0 1016 247 0 0 100 0 0
2 1 140 1435520 462328 976592 0 0 0 868 1097 3430 11 8 81 1 0



mpstat 1 10
Linux 2.6.18-194.26.1.el5 (root.com) 06/27/2011

02:53:08 PM CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s
02:53:09 PM all 4.24 0.00 2.00 0.00 0.00 0.50 0.00 93.27 1034.00
02:53:10 PM all 28.43 0.00 1.25 0.00 0.00 0.25 0.00 70.07 1041.00
02:53:11 PM all 17.66 0.00 2.08 2.08 0.26 1.82 0.00 76.10 1363.54
02:53:12 PM all 62.12 0.00 7.52 0.00 0.00 3.06 0.00 27.30 1974.44
02:53:13 PM all 75.37 0.00 5.85 0.00 0.00 0.73 0.00 18.05 1243.69
02:53:14 PM all 78.70 0.00 9.52 0.00 0.00 0.00 0.00 11.78 1184.85
02:53:15 PM all 20.71 0.00 2.02 0.00 0.00 1.52 0.00 75.76 1534.00
02:53:16 PM all 41.23 0.00 10.86 0.00 0.00 2.23 0.00 45.68 1521.98
02:53:17 PM all 50.17 0.00 23.02 0.00 0.00 6.53 0.00 20.27 1406.94
02:53:18 PM all 17.50 0.00 7.75 0.00 0.00 1.00 0.00 73.75 1090.00
Average: all 39.23 0.00 6.71 0.21 0.03 1.60 0.00 52.22 1328.81