Created attachment 36284 [details] Xorg.log KMS Driver Stack details : ========================= 1) Kernel-2.6.32-21-generic-pae 2) Libdrm-2.4.19 3) Mesa-7.8-rc2 4) Xorg-server-1.7.4 5) ddx: xf86-video-ati-6.13.0 System Environment : =================== O.S. - Ubuntu-10.04(32bit) Asic - RV790XT CPU - Intel(R) Core(TM)@ 1.86GHz Steps to Reproduce: =================== 1) Install Phoronix-test-suite from http://www.phoronix-test-suite.com/releases/repo/pts.debian/files/phoronix-test-suite_2.6.1_all.deb 2) Install openarena game phoronix-test-suite install openarena 3) Run the game with 1920x1080 phoronix-test-suite run openarena Observation : ============= 1) FPS observed is 60.2 2) Disable KMS and run the test again with the same resolution With UMS FPS is 118.4 3) Bloom option is disabled before running both the tests.
Created attachment 36285 [details] xorg.conf
Created attachment 36286 [details] glxinfo
> 1) FPS observed is 60.2 It's because KMS is limiting rendering to the refresh rate of your monitor to avoid tearing. > 2) Disable KMS and run the test again with the same resolution > With UMS FPS is 118.4 I always thought the pts demo was not as good as the anholt one for openarena - too long and mostly not enough going on so that the average fps gets pulled up by easy scenes that are 100-200fps.
(In reply to comment #3) > > 1) FPS observed is 60.2 > > It's because KMS is limiting rendering to the refresh rate of your monitor to > avoid tearing. > Closing.
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