[Bug 206231] R9 280X low performance with all games

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=206231

--- Comment #2 from kentosama (kentosama at whiteninjastudio.com) ---
Hello, with the radeonsi driver, the performance is lower than the amdgpu
driver. On the same scene in Tomb Raider, the graphics card displays ~ 10fps.

I have a lower score with glmark2:

kentosama at teradrive:~$ glmark2 -b "terrain"
=======================================================
    glmark2 2017.07
=======================================================
    OpenGL Information
    GL_VENDOR:     X.Org
    GL_RENDERER:   AMD TAHITI (DRM 2.50.0, 5.4.0-2-amd64, LLVM 9.0.1)
    GL_VERSION:    4.5 (Compatibility Profile) Mesa 19.3.2
=======================================================
[terrain] <default>: FPS: 1280 FrameTime: 0.781 ms
=======================================================
                                  glmark2 Score: 1280 
=======================================================

But glxgears shows a better result
kentosama at teradrive:~$ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
28092 frames in 5.0 seconds = 5618.325 FPS
29931 frames in 5.0 seconds = 5985.997 FPS
28614 frames in 5.0 seconds = 5722.756 FPS
29221 frames in 5.0 seconds = 5844.179 FPS
28387 frames in 5.0 seconds = 5677.356 FPS
29344 frames in 5.0 seconds = 5868.745 FPS
29921 frames in 5.0 seconds = 5984.118 FPS
28185 frames in 5.0 seconds = 5636.796 FPS
29347 frames in 5.0 seconds = 5869.202 FPS
29644 frames in 5.0 seconds = 5928.789 FPS
29234 frames in 5.0 seconds = 5846.652 FPS
28770 frames in 5.0 seconds = 5753.883 FPS
29134 frames in 5.0 seconds = 5826.747 FPS
29706 frames in 5.0 seconds = 5941.031 FPS
29344 frames in 5.0 seconds = 5868.780 FPS
29803 frames in 5.0 seconds = 5960.432 FPS
29425 frames in 5.0 seconds = 5884.889 FPS

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