https://bugs.freedesktop.org/show_bug.cgi?id=34929 --- Comment #4 from Fabio Pedretti <fabio.ped@xxxxxxxxx> 2011-03-03 02:06:34 PST --- (In reply to comment #3) > I can't see a significant performance difference with the games you mentioned. > openarena fps went from 93 to 91 with threading. glxgears frames went from 15k > to 17k. Torcs fps went from 23 to 27. There is no visible difference in > supertuxkart. I don't say it always improves performance, but it should mostly > be a win. Without gdb torcs is about the same but I definitively get a slowdown with glxgears: $ vblank_mode=0 RADEON_THREAD=0 glxgears 2>&1 | grep FPS 8445 frames in 5.0 seconds = 1688.847 FPS 8196 frames in 5.0 seconds = 1639.119 FPS 8197 frames in 5.0 seconds = 1639.396 FPS $ vblank_mode=0 glxgears 2>&1 | grep FPS 6789 frames in 5.0 seconds = 1357.671 FPS 6878 frames in 5.0 seconds = 1375.596 FPS 6879 frames in 5.0 seconds = 1375.797 FPS Did you try running some apps under gdb? The problem is hugely amplified with it. Example: $ vblank_mode=0 RADEON_THREAD=0 gdb glxgears 2>&1 | grep FPS 8171 frames in 5.0 seconds = 1634.191 FPS 8258 frames in 5.0 seconds = 1651.503 FPS 8544 frames in 5.0 seconds = 1708.673 FPS $ vblank_mode=0 gdb glxgears 2>&1 | grep FPS 1216 frames in 5.0 seconds = 242.979 FPS 1131 frames in 5.0 seconds = 226.024 FPS 862 frames in 5.0 seconds = 172.242 FPS It looks like opening/exiting threads has a noticeable overhead. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
