How to Use the sar Command on Linux

How-To Geek

By Dave McKay

Updated Dec 9, 2023

Get detailed technical statistics from your Linux computer, from real-time and historical data.

Hannah Stryker / How-To Geek

The sar command is part of the sysstat package and collects performance statistics for various elements of a Linux computer in real-time and historical reports.
Run "sudo apt install sysstat" in the Terminal to install the sysstat package and sar.
Sar provides real-time statistics for CPU load, memory paging, swap usage, and more. It can also display historical data for specific time periods, allowing you to analyze past performance issues.