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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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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 --- - [IVB/HSW bisected]padman and Smokin-Guns performance reduced ~10%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75083">75083</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB/HSW bisected]padman and Smokin-Guns performance reduced ~10%
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Other
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=94200" name="attach_94200" title="xorg.0.log on commit d8c7740ddabeb456243e40dc3cf0e86c7fca09d0">attachment 94200</a> <a href="attachment.cgi?id=94200&action=edit" title="xorg.0.log on commit d8c7740ddabeb456243e40dc3cf0e86c7fca09d0">[details]</a></span>
xorg.0.log on commit d8c7740ddabeb456243e40dc3cf0e86c7fca09d0
------------------------------------------------
Platform: IVB/HSW
Mesa: (10.1)git-62a3588
Xserver: xorg-server-1.14.5
Xf86_video_intel: (master)2.99.910-3 git-5142d1c
Cairo: (master)git-4144307
Kernel: (drm-intel-nightly) efb4a6a66f8de821515c8a2a5571d9ebc251dbd5
Bug detailed description:
----------------------------------------------
Padman and Smokin-Guns performance reduced ~10% on IVB/HSW. The problem exists
on both Raw X and gnome-session. Please see the Xorg.0.log.
The bug exist on Mesa 10.1 and master branch,not on Mesa 10.0 branch.
It’s a Mesa regression, bisecting show that the first bad commit is:
d8c7740ddabeb456243e40dc3cf0e86c7fca09d0
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Date: Wed Jan 15 10:08:38 2014 -0800
i965: Support 32 texture image units on Haswell+.
Performance
--------------------------------------------------------------------
git- 5a51a26 git- d8c7740
padman 263.33 239.1
Smokin-Guns 189.97 175.1
Reproduce steps:
---------------------------------------------
1, xinit&
2, vblank_mode=0 ./smokinguns.x86_64 +set r_fullscreen 1 +timedemo 1 +set
demodone "quit" +set demoloop1 "demo pts; set nextdemo vstr demodone" +vstr
demoloop1 +set r_customwidth 1920 +set r_customheight 1080</pre>
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