$ glxgears
3.4.9-un-def-
4159 frames in 5.0 seconds = 831.678 FPS
4246 frames in 5.0 seconds = 849.158 FPS
4262 frames in 5.0 seconds = 852.296 FPS
4288 frames in 5.0 seconds = 857.589 FPS
4289 frames in 5.0 seconds = 857.690 FPS
3.0.40-std-def
4032 frames in 5.0 seconds = 806.331 FPS
3993 frames in 5.0 seconds = 798.508 FPS
3952 frames in 5.0 seconds = 790.328 FPS
4107 frames in 5.0 seconds = 821.340 FPS
4133 frames in 5.0 seconds = 826.530 FPS