Find boot-up time in linux 🐧

Posted on 18 Oct, 2020

We can achieve this using the systemd service. Just run this

systemd-analyze

Demo:

Startup finished in 36.655s (kernel) + 58.030s (userspace) = 1min 34.685s
graphical.target reached after 57.709s in userspace

The graphical.target specifies how long it took to reach to the log-in screen.

Other tricks

1. You can also plot service initializations in a SVG graph.

systemd-analyze plot > demo.svg

2. Check which service takes most of the time.

systemd-analyze blame