Ubuntu
xserver-xorg-video-ati package

  1. Bug #132707
  2. Comment #97

Comment 97 for bug 132707

Revision history for this message
Oibaf (oibaf) wrote :

Hi, just some notes to add:
When using the latest radeon drm module (1.29, included since linux 2.6.26) and a recent version of the -ati driver “MigrationHeuristic” should not be used. See also this post of ati developer Alex Deucher:
http://www.botchco.com/agd5f/?p=28

There is a nice program that could be used to test 2D performance (either with or without compiz):
http://gtkperf.sourceforge.net/index.php?page=download

In hardy with backported mesa, ati and drm I get about 3x performance with EXA rather than XAA with my RV530.

With intrepid alpha 4 I get really bad performance, both with EXA and XAA (I suspect that it was due to a missing patch that fixes a problem with PAT, fixed in 2.6.27). Since intrepid got 2.6.27 this kernel no longer boots on my machine (this is another bug) and can't do testing.

It could be nice to report tests of gtkperf on intrepid alpha5, with or without EXA (and eventually “MigrationHeuristic”) and with or without compiz on different cards to see what is the fastest combination that could be used for intrepid.