Bug 156238

Summary:	KDE4 apps launching slowly from "cold" start
Product:	[I don't know] kde	Reporter:	Pavel Zheltobryukhov <pij>
Component:	general	Assignee:	Unassigned bugs mailing-list <unassigned-bugs>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	l.lunak, sgh
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	strace of komqueror startup strace of komqueror startup

Description Pavel Zheltobryukhov 2008-01-20 16:08:08 UTC

Version:            (using KDE 4.0.0)
Installed from:    SuSE RPMs
OS:                Linux

I created additional user account for work with KDE4 and found that:

- If I do "cold" start from power off state and log into KDE4 session immediatly, all applications starting very slowly and it windows refreshed with big delays too. For example, if I start firefox or dolphin and close it windows as soon as possible, the times was:

~> time firefox

real    0m12.000s
user    0m7.532s
sys     0m0.548s

~> time /usr/bin/dolphin

real    0m3.847s
user    0m0.068s
sys     0m0.024s

- If I do "cold" start from power off state and log into KDE3 session first, then logged out and log into KDE4 session without "full" restart of computer, applications start relatively faster, with times < 1.0 s and without any visible delays.

The computer: RoverBook Voyager B400L (formely Clevo M350C) with Celeron-M 1400MHz, 1024M RAM, i855G onboard video with 64M shared memory

How I can debug this trouble?

Comment 1 Lubos Lunak 2008-01-22 18:45:46 UTC

You can't. Dolphin taking few seconds to launch with cold start is perfectly normal, unfortunately, and it's not KDE's fault.

Comment 2 Pavel Zheltobryukhov 2008-01-26 10:11:10 UTC

That is not "only Dolphin" problem. Dolfin in my previous comment was used for example only. The problem of "slow start" have place with all other applications - Konsole, Kopete, etc.

Comment 3 Lubos Lunak 2008-01-26 10:43:37 UTC

Replace 'Dolphin' with 'any application' in the comment.

Comment 4 Søren Holm 2008-12-30 22:52:25 UTC

Created attachment 29769 [details]
strace of komqueror startup

generated with : strace -tt -T konqueror
and pressin CTRL-C when konqueror appears on screen

Comment 5 Søren Holm 2008-12-30 22:53:15 UTC

Created attachment 29771 [details]
strace of komqueror startup

generated with : strace -tt -T konqueror
and pressin CTRL-C when konqueror appears on screen

Comment 6 Søren Holm 2008-12-30 22:59:42 UTC

I see it too with every KDE-application in version 4.1.85. The "constant" latency is much lower on kde 3.5

Comment 7 Søren Holm 2009-09-02 22:18:38 UTC

Recent kernels have improved this. Please close the bug.