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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Bisected]Doom3 v1.3.1/etqw-demo/Lightsmarkv2008/OpenArena v0.8.8/warsow v1.0/Xonotic v0.7/CS/Half life2/Team Fortress 2/Portal/GpuTest v0.5/Unigine-demos/GLBenchmarkv2.5.1/v2.7.0/Synmark2_v6 performance reduced 10%~40%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83482">83482</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BDW Bisected]Doom3 v1.3.1/etqw-demo/Lightsmarkv2008/OpenArena v0.8.8/warsow v1.0/Xonotic v0.7/CS/Half life2/Team Fortress 2/Portal/GpuTest v0.5/Unigine-demos/GLBenchmarkv2.5.1/v2.7.0/Synmark2_v6 performance reduced 10%~40%
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>jianx.zhou@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Platform:BDW
Libdrm:(master)libdrm-2.4.56-21-g8c2ae1695913990cbe6c6a8aa294f354eba33bd0
Mesa:(master)2adf7ee92e19ca978d6dac29fead59f14d033f3e
Xserver:(master)xorg-server-1.16.0-152-g3a51418b2db353519a1779cf3cebbcc9afba2520
Xf86_video_intel:(master)2.99.914-86-g48a33fc379b17eed195875222ad773c911d9dff1
Cairo:(master)8e11a42e3e9b679dce97ac45cd8b47322536a253
Libva:(master)c356638098e55453d2fac8bbb92eafc8cc32d6f4
Libva_intel_driver:(master)865f288d6821dfea5a9dc2a0525eba69ef786b23
Kernel:(drm-intel-nightly)2b1159961e4bc38a9090f8ec0ab6f16701dbdf81
Bug detailed description:
--------------------------------------------------
Doom3 v1.3.1/etqw-demo/Lightsmarkv2008/OpenArena v0.8.8/warsow v1.0/Xonotic
v0.7/CS/Half life2/Team Fortress 2/Portal/GpuTest
v0.5/Unigine-demos/GLBenchmarkv2.5.1/v2.7.0/Synmark2_v6(OglBatch4/OglBatch5/OglDeferred/OglDeferredAA/OglFillTexMulti/OglHdrBloom/OglPSBump2/OglPSBump8/OglPSPhong/OglPSPom/OglShMapPcf/OglShMapVsm/OglTexFilterTri/OglTexMem128/OglTexMem512/OglTexFilterAniso/)
performance reduced 10%~40% on BDW,This issue doesn't exist on IVB/HSW/BYT-M.
It's kernel regression(drm-intel-next-queued),bisected the result show first
bad commit is:e3fa2c1fe53005d12db525fd4d9b13c2de4e219c
Author: Arun Siluvery <<a href="mailto:arun.siluvery@linux.intel.com">arun.siluvery@linux.intel.com</a>>
AuthorDate: Tue Aug 26 14:44:50 2014 +0100
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Fri Aug 29 10:56:03 2014 +0200
drm/i915/bdw: Apply workarounds in render ring init function
BTW,this issue also exist on drm-intel-nightly kernel branch.
Reproduce step:
----------------------------------------------------
1. xinit&
2. ./synmark2 OglFillTexMulti</pre>
</div>
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