iostat - Report CPU statistics and i/o statistics for devices and partitions
To display report for all CPU and devices $ iostat
To display the CPU utilization report $ iostat -c
To display continuous CPU utilization report at specific seconds interval $ iostat -c 5 $ iostat -c 10
To display the device utilization report $ iostat -d
To display specific device utilization reports at specific second intervals $ iostat -d 5 5 $ iostat -d 3 10
To display the registered device mapper names $ iostat -N
To display the report in human-readable format $ iostat -h
To view the extended statistics $ iostat -x
To display the timestamp for each report $ iostat -t
To display statistics for a specific device and its partitions $ iostat -p sda $ iostat -p vda
To display statistics for all the block devices and partitions $ iostat -p ALL
To display statistics for a group of devices $ iostat -g docker $ iostat -g kvm $ iostat -g sudo
To print output in JSON format $ iostat -c -o JSON
regards, T.Dhanasekar