Monitoring CPU usage
In this recipe, we are going to use the sar command to monitor CPU usage on the system.
Getting ready
The commands used in this recipe have been performed on a Sun Solaris machine. Hence the command output may vary in different Unix and Linux-related systems.
How to do it...
We can use the sar command with the -u switch to monitor CPU utilization:
bash-3.2$ sar -u 10 8
SunOS usstlz-pinfsi09 5.10 Generic_150400-04 sun4u 08/06/2014
23:32:17 %usr %sys %wio %idle
23:32:27 80 14 3 3
23:32:37 70 14 12 4
23:32:47 72 13 21 4
23:32:57 76 14 6 3
23:33:07 73 10 13 4
23:33:17 71 8 17 4
23:33:27 67 9 20 4
23:33:37 69 10 17 4
Average 73 11 13 4
In the preceding command with the -u switch, two values are passed as input. The first value used here, that is 10, displays...
