Re: F35 3x slower boot than F34
On Fri, Sep 3, 2021 at 12:52 PM Chris Murphy <lists(a)colorremedies.com> wrote:
Bug 2001057 - F35 boots 3x slower than F34, large time gaps in systemd journal
https://bugzilla.redhat.com/show_bug.cgi?id=2001057
This one really has gotten my goat. I'm not finding any reason why
it's taking this long to boot. Usually the critica-chain or svg plot
exposes the culprit but not in this case, I just have multiple 10s+
gaps in the journal.
I might have to do some tedious regression testing by doing a clean
install of 35 to see if it's some artifact of upgrading from 34. But
it'd be nicer if I can just directly expose the culprit(s).
I've been seeing the same, so I just did some testing. It appears to
be taking around 45-50s from luks password to GDM. I timed it with a
stopwatch (and non-graphical boot) and I see that it takes about 20s
to get to the point where it starts GDM, then the screen blanks for
about 25s before GDM comes up.
I tried using an F34 kernel to see if that would help: same result.
I tried booting with permissive=1 on the kernel commandline... 22s
boot, only about 1s from GDM start to graphical login.
So it appears to be an SELinux issue. I suspect but cannot prove that
it's related to a number of AVCs related to DBUS that I see in
selinux-troubleshooter.