Created attachment 27979 [details]
When running QGears in gl mode ("./qgears GEARS -gl") it seems to occupy the GPU so much that other 2D applications get too little GPU time to be able to respond as usual.
The desktop is hardly useable with this OpenGL app running.
QGears2 is a small Qt based benchmark and can be downloaded here:
- Fedora rawhide
- Xorg 184.108.40.206
- Kernel 2.6.31-0.42.rc2.fc12.i586
- Intel 2.8
qgears does try to fill the GPU without stopping, so things will be less responsive than not running it. However, I wonder if you might be running a Mesa without the frame throttling fix in 7.6, since you didn't mention what version of Mesa you're using. My desktop is reasonably responsive when running this demo.
Author: Eric Anholt <firstname.lastname@example.org>
Date: Tue Jul 21 11:23:18 2009 -0700
intel: Wait on the last swapbuffers to complete before queuing a new one.
Yes, seems to work fine on latest fedora rawhide.