[Bug 26984] Poor performance of Qt applications

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=26984





--- Comment #8 from Martin Stolpe <martinstolpe at gmail.com>  2010-03-11 14:17:32 PST ---
I'm using kwin with the OpenGL backend. I've tried XRender and it was slower
(as expected) than OpenGL. The different OpenGL options didn't change a lot
performance wise (I was playing a flash video in the browser. I guess a
benchmark with hard numbers would be a lot better).

Playing flash videos using kwin with compositing is smoother than without
compositing (see my post at phoronix:
http://www.phoronix.com/forums/showpost.php?p=115065&postcount=34)

The one thing where this sluggish behaviour is reproducible is when I klick on
the application launcher. It takes ~2s to open the menu.


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