特别是最后的两句
Running synchronized to the vertical refresh. The framerate should be
approximately 1/26997 the monitor refresh rate.
6148 frames in 5.0 seconds = 1222.316 FPS
6053 frames in 5.0 seconds = 1206.573 FPS
6220 frames in 5.0 seconds = 1236.850 FPS
6360 frames in 5.0 seconds = 1271.849 FPS
6118 frames in 5.0 seconds = 1223.564 FPS
XIO: fatal IO error 22 (Invalid argument) on X server ":0.0"
after 46 requests (46 known processed) with 0 events remaining.
