Bug 22658 - Performance regression with XAA offscreen pixmaps defaulting to disabled
Summary: Performance regression with XAA offscreen pixmaps defaulting to disabled
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: 7.4 (2008.09)
Hardware: All All
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-07-07 06:44 UTC by Ondrej Zary
Modified: 2014-04-08 14:12 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments

Description Ondrej Zary 2009-07-07 06:44:22 UTC 
At least on my Radeon 9550 (RV350), disabling the XAA Offscreen Pixmaps by default (as done by commit 0c6987df3b9b3a37d201d740d8248c326449835e) causes bad performance. Basic things are slow - like drawing the desktop wallpaper at KDE startup - I can clearly see how it draws from top of the screen to the bottom.

Enabling XAA Ofscreen Pixmaps again (Option "XaaOffscreenPixmaps" "on") fixes that.

And no, EXA does not make it better. EXA is slow no matter what I do.
Comment 1 Adam Jackson 2014-04-08 14:12:14 UTC 
Well XAA's not coming back, so.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.