Forums - Adreno Proflier's Grapher shows over 100% Pixel GPR Stall

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Adreno Proflier's Grapher shows over 100% Pixel GPR Stall
Join Date: 26 Jan 12
Posts: 2
Posted: Fri, 2012-06-01 05:06


Now I measured profile data of my shader(OpenGL ES 2.0 Android Native code(use NDK) with Adreno Profiler.

When I used Grapher to find bottle neck, I got "GPU Stalls" -> "Pixel GPR Stall" showed over 100%

and couldn't watch what value it was. Is it "Pixel GPR Stall"  possible OVER 100%?

According to "Shader Analyzer" my shaer use 4 GPR on vertex shader and 11 on fragment shader.

It might use many GPR comparatively on fragment shader, but over 100% stall seemed strange.

My environment is below.

- Sony Ericsson Xperia S(MSM8260) + Android 2.3.7

- Adreno Profiler 2.7.4524.26534

- Host PC:WIndows7 64bit

Meanwhile on another device, Xperia arc MSM8255, I could the "Pixel GPR Stall" value correctly, not over 100%.

My action flow is below.

- Launched my shader application.

- Opened Adreno Profiler.Conented to running Application.

- Opened Scrubber v2.x and Captured Frame.

- Opened Grapher and drag&drop "Pixel GPR Stall" from Metrics Browser.

I want to know the value" over 100% Pixel GPR Stall" is correct or not.

If not correct, I want to know how I should do to get correct result.

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