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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW Bisected]Synmark2_OglGeomPoint performance reduced ~25%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85126">85126</a>
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<th>Summary</th>
<td>[BDW Bisected]Synmark2_OglGeomPoint performance reduced ~25%
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<th>Product</th>
<td>Mesa
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
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<th>Reporter</th>
<td>lilix.cheng@intel.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>Environment:
-----------------------------------
Platform:BDW
Libdrm:(master)libdrm-2.4.58-4-g00847fa48b83a85b0cb882594a12ed1511f780db
Mesa:(master)b86f814afd4a8cc1d5a17308fcdd05fbb937ae93
Xserver:(master)xorg-server-1.16.0-418-g61a292adf45405641de1c522a04c148e0a152acd
Xf86_video_intel:(master)2.99.916-95-g49376ba3bddd15e62df55928198160d9970dc1c6
Cairo:(master)ab2a7b61d59258b71e1c3256edf2f42ea6cc1eb2
Libva:(master)ccd93de5a707e92a629cccd595757c8d436fa3cc
Libva_intel_driver:(master)f11176415ec26eb5960ba6841d2d9c22f2cabc60
Kernel:(drm-intel-nightly)ead7d71357628dc1231535886ec09853e9164d6d
Bug detailed description:
---------------------------------------------
Synmark2_OglGeomPoint performance reduced ~25% on BDW.
This problem exist both on gnome-session and Raw X.
It's Mesa regression,bisect result first bad commit is:
commit b7844d12487dbac702ecd734faeffa6fe1a61a83
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
AuthorDate: Tue Sep 30 01:15:56 2014 -0700
Commit: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
CommitDate: Thu Oct 9 15:03:32 2014 +0200
i965: Use BDW_MOCS_PTE for renderbuffers.
Reproduce steps:
---------------------------------------------
1. xinit&
2. ./synmark2 OglGeomPoint</pre>
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