https://bugs.freedesktop.org/show_bug.cgi?id=28550
Summary: [UMS vs KMS]: Openarena performance drops by half with KMS enabled Product: Mesa Version: unspecified Platform: x86 (IA32) OS/Version: other Status: NEW Severity: major Priority: medium Component: Drivers/DRI/R600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: hysvats@gmail.com
Created an attachment (id=36284) --> (https://bugs.freedesktop.org/attachment.cgi?id=36284) 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-t...
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.