In this recipe, we are going to use the sar
command to monitor CPU usage on the system.
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.
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...