mpstat

Display CPU statistics every 2 seconds

$ mpstat 2

$ mpstat 2 5

$ mpstat -P 0 2 5

$ mpstat -P ALL 2

$ mpstat -I ALL 2

mpstat [options] [interval [count]]

mpstat reports processor-related statistics including CPU utilization, interrupts, and other per-processor metrics. It can display statistics for individual processors or aggregated across all.

-A

Equivalent to -n -u -I ALL -P ALL

Report interrupt statistics

Report NUMA node placement statistics

Output in JSON format

Indicate processor number or ALL

Report CPU utilization (default)

Print version number

%usr: User level (applications)
%nice: User level with nice priority
%sys: System level (kernel)
%iowait: Waiting for I/O
%irq: Hardware interrupts
%soft: Software interrupts
%steal: Stolen by hypervisor
%guest: Running virtual processor
%gnice: Running niced guest
%idle: Idle time

The first report shows statistics since boot. Processor numbering starts at 0. On virtual machines, %steal indicates CPU time taken by the hypervisor.

mpstat is part of the sysstat package, providing multiprocessor statistics for SMP systems.

sar(1), iostat(1), vmstat(8), top(1)