[Bug 21611] 2c8e130f73c680d4a7381b2ef37982b82c6ee478 can cause massive 2D performance slowdown

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=21611





--- Comment #3 from Peter Van Eynde <pvaneynd at gmail.com>  2009-05-07 05:30:07 PST ---
I am running KDE 4.2.2 and I was noticing very large delays in changing tabs in
konsole. Switching from one console to another would take upto 2 seconds. Which
was not what I wanted.

The large desktop size was because my (big) external screen can be rotated and
I wanted to have a 'Virtual' to accommodate both orientations.

Using KDE in Xrender 'enhanced' mode did not seem to improve the situation, but
I have done no timing tests.

I will test if xcompmgr improved the problem. What 'modern' benchmarking tool
do you suggest to use?

And I did not complain that the performance is slower without DRI, but that
after the commit the performance is _really_ slow.


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