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@lists.freedesktop.org Reporter: megwattt@gmail.com QA Contact: dri-devel@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).