Bug 260718

Summary:	kmail much slower when using oxygen widget style compared to plastique
Product:	[Plasma] Oxygen	Reporter:	m.wege
Component:	general	Assignee:	Hugo Pereira Da Costa <hugo.pereira.da.costa>
Status:	RESOLVED FIXED
Severity:	normal	CC:	hugo.pereira.da.costa
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:

Description m.wege 2010-12-19 17:00:20 UTC

Version:           2.0.89 (using KDE 4.5.85) 
OS:                Linux

I just switched kmail from the oxygen widget style to the plastique style, because it was suggested in another bug report to test it. I then noticed something else: The display of messages in a folder is much faster using plastique. I did not measure it, but the difference is huge. In many cases the mails in the folders are displayed instantly or near to instantly while using the oxygenstyle it sometimes takes 10 seconds or more.

Reproducible: Always




OS: Linux (i686) release 2.6.37-7-generic-pae
Compiler: cc

Comment 1 Hugo Pereira Da Costa 2010-12-22 19:17:30 UTC

I'll have to switch to version 2.XX to test and debug.
I'm still using version 1.13.5
Now: the way I understand it, kmail (and whole kdepim suite) is still under heavy development.

I believe there is a conflict (and possible repaint-loop) between webkit, used to render the mail and the email 'sunken' frame (which for some reason gets hidden most of the time in both 1.X and 2.X versions of kmail).

Will keep you posted.

Hugo

Comment 2 Hugo Pereira Da Costa 2012-11-20 14:28:59 UTC

Still valid with more recent KDE and KMain and Oxygen ?

Comment 3 Hugo Pereira Da Costa 2012-11-20 14:30:02 UTC

more precisely: 
Slower than plastique, it will be. (and will always be) due to the complexity of the rendering.
Is it: slower up to the point it is unusable ? 
What is the actual *idle* CPU consumption ?

Comment 4 m.wege 2012-11-20 14:44:34 UTC

Kmail still is generally not very fast, but it works and I assume that there others reasons for that. So the bug can be closed.