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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [gfx9/Vega] Performance regression in master, 17.3 works fine"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103917">103917</a>
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<th>Summary</th>
<td>[gfx9/Vega] Performance regression in master, 17.3 works fine
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/Gallium/radeonsi
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>vedran@miletic.net
</td>
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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<div>
<pre>I'm using Fedora rawhide (to become 28) along with Mesa 17.3.0-rc3, LLVM 5.0.0
and Kernel 4.15-git. If I install Mesa 17.3.0-rc5, everything still works fine.
If I install Mesa git, everything works fine with 17.3-rc3 running desktop and
17.4 running games.
After rebo a reboot, however, with Mesa git running both the desktop and games,
performance in games is very bad, rougly 1 fps.
I tried to bisect, but wasn't able to figure out what commit exactly is causing
the problem. I compile Mesa with
./autogen.sh --enable-egl --enable-driglx-direct --disable-gles1 --enable-gles2
--enable-shared-glapi --enable-glx-tls --enable-dri --enable-texture-float
--with-dri-drivers="" --with-egl-platforms=drm,wayland,surfaceless,x11
--with-gallium-drivers=r600,radeonsi,swrast --with-vulkan-drivers=radeon
--enable-opencl --enable-opencl-icd PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
--enable-nine --enable-gbm --enable-va --enable-vdpau
--libdir=/usr/local/lib64; make clean; make -j4; make -j4 check</pre>
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