Installing iostat and its uses

iostat

The iostat utility is installed with yum via the sysstat package as shown below.

#yum install sysstat

The iostat command in is used to monitor the system I/O device.

Command
# iostat [interval [count] ]


The iostat command will generates two reports, one for CPU  and one for device. Using -c option will genertate CPU report and -d option will generate device report.


View only CPU report.
iostat –c

View only device report
iostat -d


Runnig iostat every 5 seconds for 10 times
iostat 5 10