Dirk große Osterhues

Measuring boot performance in Ubunu is fairly simple. Systemd provides a tool for that.

The overall boot time for kernel and userspace is given by:

systemd-analyze

How much time each boot services takes in descending order is displayed as follows:

systemd-analyze blame

The critical chain for the default target is shown my this:

systemd-analyze critical-chain 

Those time can also be graphed as svg:

systemd-analyze plot > boot_analysis.svg