Bug 23543 - Some QT4 themes perform poor
Summary: Some QT4 themes perform poor
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Carl Worth
QA Contact: Xorg Project Team
Keywords: NEEDINFO
Depends on:
Reported: 2009-08-27 03:47 UTC by Bart Muder
Modified: 2011-06-01 10:44 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Description Bart Muder 2009-08-27 03:47:18 UTC

I read on Carl Worth's blog about reporting performance problems with the new UXA architecture - so here is mine.

I experience low performance with certain QT4 themes, especially Plastique theme and kde's default theme Oxygen.
Especially resizing windows feels slow the window contents lag behind the window borders a lot especially for more complex windows.

Top shows quite a lot time spent in "sys" mode.

I am using Kubuntu-9.10-alpha-4 on an GMA965.

Please let me know in the case you need additional information.
Comment 1 Carl Worth 2009-10-26 11:01:01 UTC
Hi Bart,

Thanks so much for the report.

Can I get a few more details from you? Did you notice a particular slowdown
when moving from one version of the driver to another? And if so, which

Or is it just that things are generally slow?

Your Xorg.0.log file will contain details of the driver version, etc.
You can find more descriptions of useful things to include in a bug report


When you come back with more information, please remove the NEEDINFO keyword
from the bug report.

Thanks, and hopefully we will get things performing better for you soon.

Comment 2 Chris Wilson 2010-07-11 07:32:54 UTC
perf is a useful tool in these scenarios to find where the time is going, and especially it's ability to filter on process and shared objects.

Judging from many of the comments, 2010Q2 should perform much better with KDE thanks to our improved handling of Images.

What I have seen from xtracing Qt applications suggests that time would be better spent improving the graphics libraries...
Comment 3 Eric Anholt 2011-06-01 10:44:10 UTC
Feedback timeout.  It sounds like KDE performance problems have been fixed anyway in the last year and a half, so assuming this one's fixed.

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