[plasmashell] [Bug 386473] Slow startup

[Rafael C .]

https://bugs.kde.org/show_bug.cgi?id=386473

--- Comment #6 from Rafael C.  ---
Thanks for the info.


> ksplash is removed when both plasma reports it's done and we've launched all 
> autostart apps - we don't wait for autostart apps to finish, so it's no
> surprise that using latte dock makes it seem faster.


Just to clarify, replacing the panel with Latte Dock didn't make my startup
faster or slower. Also, I took the times with ksplash turned off, so it didn't
influence.



> The old panel being slow would be interesting if you still had the old config.

I don't, unfortunately. :/

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[plasmashell] [Bug 386473] Slow startup

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=386473

--- Comment #5 from David Edmundson  ---
>3) These times are more acceptable, and I wonder if they are expected 
>regarding the current architecture of Plasma.

To some extent.
ksplash is removed when both plasma reports it's done and we've launched all
autostart apps - we don't wait for autostart apps to finish, so it's no
surprise that using latte dock makes it seem faster.

The old panel being slow would be interesting if you still had the old config. 

Note 5.12 does bring at least 5 indepentent startup performance improvements,
with more in the works.

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[plasmashell] [Bug 386473] Slow startup

[Rafael C .]

https://bugs.kde.org/show_bug.cgi?id=386473

--- Comment #4 from Rafael C.  ---
Thanks for the points, Christoph.

Actually, I did some more tests in the last weeks and I'll try to comment on
them and answer your points. Every metric here was taken right after a cold
boot.


1) Indeed, I realized that the second login for a new user is much faster than
the first one. In my case, it drops to something near to 11 seconds.


2) Disabling the splash screen didn't help with the startup time, but allowed
me to see that the last part of the desktop to show up, in my case, is the
panel.

So, oddly, I found out that simply removing it and adding it again improves the
time, even for a clean user.

For my main user, this procedure cut the initialization time for about the half
(from ~33s to ~17s), even after redoing all the previous customizations to the
panel. Right now, I have replaced it with Latte Dock (also heavily customized)
and I still boot from SDDM to my main user in about 17s.

For a brand new user, after this odd workaround, a second login takes about 9
seconds (instead of the 11s mentioned before).


3) These times are more acceptable, and I wonder if they are expected regarding
the current architecture of Plasma.

However, they are still very high compared, for example, to GNOME on the same
machine. GNOME takes me 3 seconds from GDM to a fully functional desktop. I
won't, of course, mention lighter alternatives such as Xfce or i3.

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[plasmashell] [Bug 386473] Slow startup

[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=386473

--- Comment #3 from Christoph Feck  ---
Some people reported that disabling the Splash screen via systemsettings5
improved startup time for Plasma.

Also try a second start. For fresh users, the initial system configuration
cache (ksycoca5) has to be created, which needs to scan several system and user
folders, but it is not clear from your report how much time is actually spent
for this.

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[plasmashell] [Bug 386473] Slow startup

[Rafael C .]

https://bugs.kde.org/show_bug.cgi?id=386473

--- Comment #2 from Rafael C.  ---
Hi David,

No offense, but are you saying that I should only report a bug if I already
knew its cause? I don't think it makes much sense. 

You said it's a known bug, yet I can't find any report for it. If I found, I
wouldn't spend my time reporting it.

Anyhow, if you need any info, logs, etc, to make this report less "vague"
(which I disagree) I'll gladly help.

Thanks.

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[plasmashell] [Bug 386473] Slow startup

[David Edmundson]

https://bugs.kde.org/show_bug.cgi?id=386473

David Edmundson  changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution|--- |INVALID

--- Comment #1 from David Edmundson  ---
Slow startups are something we're working on.

Unless you have identified anything specific causing a slowdown in the startup
this is too vague to be a useful report.

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