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sar

Monitor performance of various Linux subsystems.

  • Report I/O and transfer rate issued to physical devices, one per second (press CTRL+C to quit):

sar -b {{1}}

  • Report a total of 10 network device statistics, one per 2 seconds:

sar -n DEV {{2}} {{10}}

  • Report CPU utilization, one per 2 seconds:

sar -u ALL {{2}}

  • Report a total of 20 memory utilization statistics, one per second:

sar -r ALL {{1}} {{20}}

  • Report the run queue length and load averages, one per second:

sar -q {{1}}

  • Report paging statistics, one per 5 seconds:

sar -B {{5}}