korupt@korupt-desktop:~$ glxgears
do_wait: drmWaitVBlank returned -1, IRQs don't seem to be working correctly.
Try running with LIBGL_THROTTLE_REFRESH and LIBL_SYNC_REFRESH unset.
2373 frames in 5.0 seconds = 474.455 FPS
1875 frames in 5.0 seconds = 374.998 FPS
2442 frames in 5.0 seconds = 488.303 FPS
2380 frames in 5.0 seconds = 475.816 FPS
2363 frames in 5.0 seconds = 472.532 FPS
korupt@korupt-desktop:~$