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072-the-mpstat-command.md

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The mpstat command

The mpstat command is used to report processor related statistics. It accurately displays the statistics of the CPU usage of the system and information about CPU utilization and performance.

Syntax:

mpstat [options] [<interval> [<count>]]

Note : It initializes the first processor with CPU 0, the second one with CPU 1, and so on.

Options and their Functionalities:

Option Description
-A to display all the detailed statistics
-h to display mpstat help
-I to display detailed interrupts statistics
-n to report summary CPU statistics based on NUMA node placement
-N to indicate the NUMA nodes for which statistics are to be reported
-P to indicate the processors for which statistics are to be reported
-o to display the statistics in JSON (Javascript Object Notation) format
-T to display topology elements in the CPU report
-u to report CPU utilization
-v to display utilization statistics at the virtual processor level
-V to display mpstat version
-ALL to display detailed statistics about all CPUs

Examples:

  1. To display processor and CPU statistics:
mpstat
  1. To display processor number of all CPUs:
mpstat -P ALL
  1. To get all the information which the tool may collect:
mpstat -A
  1. To display CPU utilization by a specific processor:
mpstat -P 0
  1. To display CPU usage with a time interval:
mpstat 1 5

Note: This command will print 5 reports with 1 second time interval