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Radeon 3D Performance: Gallium3D vs. Classic Mesa

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  • #71
    Looking for suggestions on my latest mesa 7.9 build
    ./check_opengl.sh
    [ 6.065115] [drm] radeon kernel modesetting enabled.
    [ 6.067101] [drm] initializing kernel modesetting (RV670 0x1002:0x9509).
    [ 6.836597] [drm] initializing kernel modesetting (RV670 0x1002:0x9509).
    [ 5.677907] [drm] Initialized drm 1.1.0 20060810
    direct rendering: Yes
    OpenGL renderer string: Gallium 0.4 on R600 (HD2XXX,HD3XXX)
    OpenGL vendor string: X.Org
    OpenGL renderer string: Gallium 0.4 on R600 (HD2XXX,HD3XXX)
    OpenGL version string: 2.1 Mesa 7.9
    OpenGL shading language version string: 1.20
    OpenGL extensions:
    $ glxgears
    1935 frames in 5.0 seconds = 386.972 FPS
    is much lower than expected (~1800)

    running 2.6.36-rc6-amd64. Built using git for pixman, cairo, drm, ddx.
    Thanks in advance.

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    • #72
      Don't use glxgears as a benchmark. The framerate with DRI2 is very much limited by host task switches, so you will never see 1800 FPS with DRI2. In real OpenGL Apps you will see a much smaller to no performance hit. So glxgears says nothing in this case.

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      • #73
        Originally posted by Lynxeye View Post
        Don't use glxgears as a benchmark. The framerate with DRI2 is very much limited by host task switches, so you will never see 1800 FPS with DRI2. In real OpenGL Apps you will see a much smaller to no performance hit. So glxgears says nothing in this case.
        I forgot to set LD_LIBRARY_PATH to point to the right place for the 7.9 build. Now I get something more reasonable (from the xdemo directory). $ ./glxgears
        Running synchronized to the vertical refresh. The framerate should be
        approximately the same as the monitor refresh rate.
        6797 frames in 5.0 seconds = 1359.189 FPS
        Thanks for hinting on that lower number. Which quick benchmark (not wine) do you recommend for a quick sanity check? (link would be great) Thanks.

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        • #74
          These are good and some of them are free: http://dri.freedesktop.org/wiki/Benchmarking

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