Код: Выделить всё
olej@nvidia:~$ glxgears
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
302 frames in 5.0 seconds = 60.373 FPS
300 frames in 5.0 seconds = 59.999 FPS
301 frames in 5.0 seconds = 60.002 FPS
X connection to :0 broken (explicit kill or server shutdown).
А вот без синхронизации с вертикальной развёрткой:
Код: Выделить всё
olej@nvidia:~$ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
7337 frames in 5.0 seconds = 1467.313 FPS
7508 frames in 5.0 seconds = 1501.584 FPS
7503 frames in 5.0 seconds = 1500.438 FPS
X connection to :0 broken (explicit kill or server shutdown).
P.S. Почему здесь значение vblank_mode=2 понадобилось ему 0, а не 2 - как выше с случаем такого же i915 - тайна сия великая есть :
Код: Выделить всё
olej@nvidia:~$ vblank_mode=2 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
303 frames in 5.0 seconds = 60.526 FPS
301 frames in 5.0 seconds = 60.000 FPS
301 frames in 5.0 seconds = 60.001 FPS
^C