[Mesa-dev] [Bug 97260] [bisected] R9 290 low performance in Linux 4.7

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97260

--- Comment #36 from Jos van Wolput <wolput at onsneteindhoven.nl> ---
Since your patch 1e3218bc... (loader/dri3: Overhaul dri3_update_num_back),
vblank_mode=0 glxgears shows a performance regression of about 30% of what I
got
before your patch was applied.

I am using Debian/Sid with
GL_RENDERER   = Gallium 0.4 on AMD RS780 (DRM 2.45.0 /
4.7.0-2.1-liquorix-amd64, LLVM 3.9.0)
GL_VERSION    = 3.0 Mesa 12.1.0-devel (git-cee459d8)
libGL: OpenDriver: /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
libGL: Using DRI3 for screen 0

Reverting your patch to the previous state fixes this issue.

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