cron-{daily, weekly, monthly}.service (and boot_delay) is part of the system's startup time

[a-detiste]

Forwarded from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=829438 .

I have seen the same behaviour, but I have no clue.

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Systemd service cron-daily.service has line

ExecStartPre=/lib/systemd-cron/boot_delay 5

which makes it wait until system's uptime is at least 5 minutes. The
delay is also part of Systemd's startup time as reported by journal:

[...] systemd[1]: Startup finished in 4.159s (kernel) + 4min 58.016s (userspace) = 5min 2.175s.

See the userspace and total time. The delay also shows in the graph
produced by command "systemd-analyze plot" (I'll try to include an
attachment).

This is a minor issue but it would be nice if cron services weren't part
of the startup time.

Teemu Likonen

[a-detiste]

systemd-analyze critical-chain can be usefull to debug

[a-detiste]

https://www.linux-magazine.com/Issues/2018/212/The-sys-admin-s-daily-grind-systemd-analyze