[Bug 99955] [r600g] GPU load always displayed at 100% with GALLIUM_HUD=GPU-load

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Feb 25 00:38:05 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=99955

            Bug ID: 99955
           Summary: [r600g] GPU load always displayed at 100% with
                    GALLIUM_HUD=GPU-load
           Product: Mesa
           Version: git
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: megwattt at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Hello,

The GPU-load graph from GALLIUM_HUD will always be at 100%, no matter what
application is launched (even glxgears with vblank_mode=3). I tested that on my
Radeon HD 5770.

This regression is caused by commit b8f3b00742eab6ee1868407b876f69195a51f3b6 :
gallium/radeon: include SDMA in the GPU load query.

It doesn't seems to affect radeonsi, as the GPU-load results on a TOPAZ XT chip
are more reasonable (~5% with the same test).

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