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SAR - Linux Utility for System Monitoring

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Aditya Srivastava

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Dec 13, 2015
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Aditya Srivastava submitted a new resource:

SAR - Linux Utility for System Monitoring - SAR - Very useful System Monitoring Utility

Using sar you can monitor performance of various Linux subsystems (CPU, Memory, I/O..) in real time.


Using sar, you can also collect all performance data on an on-going basis, store them, and do historical analysis to identify bottlenecks.
Sar is part of the sysstat package.

Below are the Linux performance statistics using sar. (along with argument)


  1. Collective CPU usage --> sar -u
  2. Individual CPU statistics --> sar -u -P ALL
  3. Memory used and available --> sar -r
  4. Swap...

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