Optimizing the performance of an Intel 965 graphics card could be a tricky job. The problem gets bigger if you want to use Compiz and have to use the 3D acceleration. There are three available acceleration methods for Intel cards: the old 'XAA', the stable 'EXA' and the not-ready-yet 'UXA'. I found that the default settings give rather poor performance in Unbuntu Jaunty and the result from glxgears was ~480 FPS. With the following settings in xorg.conf I was able to get 750 FPS.
Section "Device"
Identifier "Configured Video Device"
Option "AccelMethod" "EXA"
Option "MigrationHeuristic" "greedy"
Option "ExaNoComposite" "false"
EndSection
Also setting this variable in /etc/environment seems to help as well:
INTEL_BATCH="1"
No comments:
Post a Comment