sar - Collect, report, or save system activity information.
yum install sysstat
cd /var/log/sa
sar
Linux 2.6.18-238.9.1.el5 04/09/2014
04:40:01 AM CPU %user %nice %system %iowait %steal %idle
04:50:01 AM all 9.93 0.00 1.04 1.02 0.00 88.01
05:00:01 AM all 8.56 0.00 0.79 1.07 0.00 89.58
05:10:01 AM all 6.81 0.00 0.65 1.18 0.00 91.36
05:20:01 AM all 7.63 0.10 0.68 0.91 0.00 90.69
05:30:01 AM all 6.95 0.00 0.64 0.79 0.00 91.62
05:40:01 AM all 10.36 0.00 0.83 0.97 0.00 87.83
05:50:01 AM all 9.30 0.00 0.82 0.92 0.00 88.96
06:00:01 AM all 9.34 0.00 0.81 0.90 0.00 88.95
06:10:01 AM all 12.96 0.00 0.81 0.81 0.00 85.43
06:20:01 AM all 11.03 0.10 1.03 0.58 0.00 87.27
06:30:01 AM all 12.49 0.00 1.10 0.70 0.00 85.72
06:40:01 AM all 9.44 0.00 0.82 0.66 0.00 89.07
06:50:01 AM all 9.09 0.00 0.79 0.56 0.00 89.56
07:00:01 AM all 10.42 0.00 0.93 0.61 0.00 88.04
07:10:01 AM all 10.75 0.00 0.91 0.63 0.00 87.71
Average: all 9.67 0.01 0.84 0.82 0.00 88.65
%user
Percentage of CPU utilization that occurred while execut-
ing at the user level (application).
%nice
Percentage of CPU utilization that occurred while execut-
ing at the user level with nice priority.
%system
Percentage of CPU utilization that occurred while execut-
ing at the system level (kernel).
%iowait
Percentage of time that the CPU or CPUs were idle during
which the system had an outstanding disk I/O request.
%idle
Percentage of time that the CPU or CPUs were idle and the
system did not have an outstanding disk I/O request.
Ref:- http://www.linuxcommand.org/man_pages/sar1.html
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