boot-time — Boot time¶

A boot that suddenly takes minutes after an upgrade usually means a unit waiting for something that no longer exists — a device, a mount, a network that never comes up.

At a glance


ID	`boot-time`
Category	Services
Needs root	no
Needs programs	`systemd-analyze`
Compares with a snapshot	no
Options	0

What it checks¶

The total boot time, the slowest units, and the critical chain of units the boot waited on, from systemd-analyze.

Findings¶

Severity	Finding	What to do
info	Boot took time	The evidence lists the slowest units; `systemd-analyze blame` shows them all.
info	Boot critical chain	Units with a `+time` delayed the boot. `systemd-analyze critical-chain UNIT` for one unit.
info	Boot has not finished yet	Some units are still starting; `systemctl list-jobs` shows what's waiting.

All findings are informational: boot time depends too much on the system to judge.

Commands it runs¶

systemd-analyze
systemd-analyze blame --no-pager
systemd-analyze critical-chain --no-pager

Limitations¶

In containers, and on systems without systemd as PID 1, it's skipped.
It reports this boot only; compare with an earlier report to see a change.

Options¶

This check has no options. Turn it off with enabled: false under checks: boot-time: in the configuration file, or for one run with --skip boot-time.