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SAR | Tutarticle

Checking System Resources with sar

rhel-7

The System Activity Reporter (sar) is one of the oldest system monitoring facilities created for early UNIX systems—predating Linux by a few decades. The sar command itself can display system activity continuously, at set intervals (every second or two), and display it on the screen. It can also display system activity data that was gathered earlier.The sar command is part of the sysstat package. By installing sysstat and enabling the sysstat service, your system immediately begins gathering system activity data

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