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sar (Unix)
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<p>System Activity Report (sar) is a <a href="/facts/Unix_System_V/Epm6GEY4">Unix System V</a>-derived <a href="/facts/System_monitor/xnNgtTvF">system monitor</a> command used to report on various system loads, including <a href="/facts/CPU/Jxp1bqMV">CPU</a> activity, memory/paging, interrupts, device load, network and <a href="/facts/Swap_partition/KR889x5k">swap space</a> utilization. Sar uses /<a href="/facts/Procfs/qGd3Ncgz">proc</a> filesystem for gathering information. </p>