Linux

Linux SAR (System Activity Reports)¶

Install SAR

$ sudo apt install sysstat

Start and enable the service

$ sudo systemctl enable sysstat && sudo systemctl start sysstat

Verify

$ sudo systemctl status sysstat

Enable SAR

$ sudo sed -i 's/false/true/g' /etc/default/sysstat
$ sudo systemctl restart sysstat

Generate SAR Chart

sar -A -f /var/log/sysstat/sa01 > /tmp/sa01_$(hostname).txt

Example
CPU usage (2-second) for 5 times

$ sar -u 2 5
$ sar -P All 2 5

Memory usage (1-second) for 10 times

$ sar -r 1 10

Filesystem usage (1-second) for 5 times

$ sar -F 1 5