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    GPU performance

    Doing performance work with GPUs is harder than with CPUs because of the asynchronous and massively parallel architecture.

    Tools

    PIX - Can do timing of Direct3D calls. Works reasonably well with Firefox. See also Debugging With PIX.

    NVIDIA PerfHUD - Last I checked required a special build to be used.

    NVIDIA Parallel Nsight - Haven't tried.

    AMD GPU ShaderAnalyzer - Will compile a shader and show the machine code and give static pipeline estimations. Not that useful for Firefox because all of our shaders are pretty simple.

    AMD GPU PerfStudio - I had trouble getting this to work, and can't remember whether I actually did or not.

    Intel Graphics Performance Analyzers - Haven't tried.

    APITrace - Open source, works OK.

    PVRTrace - Doesn't seem to emit traces on android/Nexus S. Looks like it's designed for X11-based linux-ARM devices, OMAP3 is mentioned a lot in the docs ...

    Guides

    Accurately Profiling Direct3D API Calls (Direct3D 9)- Suggests avoiding normal profilers like xperf and instead measuring the time to flush the command buffer.

    OS X - Best Practices for Working with Texture Data - Sort of old, but still useful.

    Document Tags and Contributors

    Contributors to this page: Sheppy, bgirard, pragmatic_, zeh, cgj, kscarfone, jrmuizel
    Last updated by: pragmatic_,