Run:

systemd-analyze blame

Find one of the last critical services that indicates the machine is "up".

systemd-analyze critical-chain <name>   (this will show you what took
how long prior to that service)

at 18seconds it looks like your network and the graphics drivers are
getting loaded, so all before this is initing the system, but all
"kernel" drivers were loaded at 8 sec so it seems from 8 sec -> 18 sec
the userspace pieces are being started, but those pieces do not load
any kernel pieces so they do not show the work happening in userspace.
If you look at messages file it likely has a lot of userspace pieces
starting up.


On Sun, Jun 27, 2021 at 3:37 PM Anil F Duggirala
<anilduggir...@fastmail.fm> wrote:
>
> hello,
>
> I am looking at output from dmesg on my laptop and there appears to be a
> time when a process takes longer than what might be expected and I think
> this may be reducing my startup speed.
>
> My question is, is it normal for there to be a jump in time (timestamp)
> from 7 seconds to 18 seconds. And then from 21 seconds to 30 seconds?
>
> Are these processes slowing down my startup?
>
> dmesg output:
>
> https://pastebin.com/HhDyURjd
>
> thank you.
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