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FPS or other counter values are incorrect
shaderia
Join Date: 7 Apr 16
Posts: 1
Posted: Mon, 2016-05-02 02:07
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I tested several phones with snapdragon 808 (adreno 418) and 810 (adreno 430) using Adreno profiler v4.0.5511.5192 on Windows 7 64-bit, but I got unusual values on all hardware counters. 

When I changed the sampling frequency (default 4Hz) to 1 Hz or 20 Hz, the average (not a specific period) FPS value (EGL category) of benchmarks (3D mark or GFXbench) SIGNIFICANTLY changed.

For example: 

3FPS on 1Hz sampling rate,

5FPS on 4Hz,

16FPS on 20Hz.

(but actually the real FPS was 3 at the benchmark, not 5 or 16)

And other hardware counter values (ex. fragment shaded per second) are also fluctuated accoding to the sampling rate. Interestingly, the FPS value was correct when I only displayed the FPS flot in App. grapher, but I tried to add another floats for hardware counter, the FPS value was distorted. 

 

Is there anybody know why the hardware counter values are incorrect?

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