Even more weird stuff. Take a look at some of the returns from glxgears (ran few times)
Code:
$ glxgears
18005 frames in 5.0 seconds = 3600.900 FPS
18528 frames in 5.0 seconds = 3705.496 FPS
18101 frames in 5.0 seconds = 3620.047 FPS
18514 frames in 5.0 seconds = 3702.641 FPS
9939 frames in 5.0 seconds = 1987.599 FPS
6434 frames in 5.0 seconds = 1286.792 FPS
6444 frames in 5.0 seconds = 1288.757 FPS
6462 frames in 5.0 seconds = 1292.333 FPS
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 105210 requests (105210 known processed) with 0 events remaining.
$ glxgears
16464 frames in 5.0 seconds = 3292.800 FPS
11555 frames in 5.0 seconds = 2310.837 FPS
6457 frames in 5.0 seconds = 1291.301 FPS
6485 frames in 5.0 seconds = 1296.856 FPS
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 44954 requests (44954 known processed) with 0 events remaining.
$ glxgears
15459 frames in 5.0 seconds = 3091.788 FPS
7116 frames in 5.0 seconds = 1423.178 FPS
6416 frames in 5.0 seconds = 1283.140 FPS
6476 frames in 5.0 seconds = 1295.155 FPS
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 37823 requests (37823 known processed) with 0 events remaining.
$ glxgears
9177 frames in 5.0 seconds = 1835.243 FPS
$ glxgears
8991 frames in 5.0 seconds = 1798.131 FPS
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
after 13238 requests (13238 known processed) with 0 events remaining.
$ glxgears
8614 frames in 5.0 seconds = 1722.760 FPS
7041 frames in 5.0 seconds = 1408.068 FPS
At ~3000, there was a squeaky (although silent) sound coming out of my laptop. As soon as the sound stopped the FPS dropped to 2000 (or the other way around - you tell me). I have only SSD in my laptop so it wasn't a HDD. After few trials I couldn't get that ~3000 anymore. It got back after I restarted the computer:
Code:
$ glxgears
18488 frames in 5.0 seconds = 3697.573 FPS
18768 frames in 5.0 seconds = 3753.586 FPS
17016 frames in 5.0 seconds = 3403.173 FPS
18025 frames in 5.0 seconds = 3604.873 FPS
18870 frames in 5.0 seconds = 3773.924 FPS
18744 frames in 5.0 seconds = 3748.473 FPS
7204 frames in 5.0 seconds = 1440.637 FPS
7084 frames in 5.0 seconds = 1416.773 FPS
6626 frames in 5.0 seconds = 1325.097 FPS
Again - it goes ~1400 => the squeaky sound goes out.
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