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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 --- - [HSW/IVB bisected] cairo-trace/(benchmark)swfdec-youtube.trace reduced by ~20%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66297">66297</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW/IVB bisected] cairo-trace/(benchmark)swfdec-youtube.trace reduced by ~20%
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>mengmeng.meng@intel.com
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Product</th>
<td>xorg
</td>
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<pre>System Environment:
----------------------------------------------
Platform: HSW/IVB
Mesa: (master)6aabd9490c7b71d363a384935597b3e37295e61e
Xf86_video_intel:
(master)2.21.9-51-g62e42de300275a668a326357d454062221714fe8
Cairo: (master)4d9439132de85c0f0f4d5b5a474ea7164910251e
Kernel: (drm-intel-nightly) 51c5e63195eff27962be315b5c835cdc2fe034fb
Bug detailed description:
----------------------------------------------
cairo-trace/(benchmark)swfdec-youtube.trace reduced by ~20% on IVB/HSW.
It’s Xf86_video_intel regression, bisecting show the first bad commit is that:
commit 48028a7c923fa0d66b01e8e94d4f0742866f78ec
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Fri Jun 21 14:29:43 2013 +0100
sna: Inspect availablity of render before prefering to use the GPU
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Performance on IVB
---------------------------------------
git-48028a7 git-71fc834
swfdec-youtube.trace 0.385 0.30
Reproduce steps:
---------------------------------------------
1. xinit&
2.vblank_mode=0 CAIRO_TEST_TARGET=xlib ./cairo-perf-trace -i 12
/home/cairo-traces/benchmark/swfdec-youtube.trace</pre>
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