On Thu, 2020-11-12 at 08:19 +0100, Damian wrote:
> > some versions ago (16.04) a cold start to me 16 seconds.
> > With all later versions even with SSD harddrives it takes over a
> > minutes.
>
> Which time frame do you measure that takes a minute? I measure 15
> seconds from hitting enter in grub and seeing my desktop wallpaper.
$ systemd-analyze blame
might be a starting point. OTOH it provides some quite useless
information. I fore example get...
$ systemd-analyze blame
2min 30.756s fstrim.service
19.498s man-db.service
14.584s alice-dhcp.service
3.478s lvm2-monitor.service
3.292s dev-sdc1.device
1.060s systemd-random-seed.service
718ms upower.service
654ms systemd-logind.service
650ms lightdm.service
[snip]
...actually it much like took less than 10 seconds to boot and start an
openbox session and even if I should be mistaken and it took longer,
without doubts it was less than 1 minute.
However, even if some units take longer, a session can start, but some
units probably need to finish a process before a session can start.
Trimming and establishing an Internet connection by DHCP needs not to be
finished to start a session, but other services probably first need to
initial things, before a session can be started.
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