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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - constant fps drops with Intel and Radeon on Source games"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87886">87886</a>
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<th>Summary</th>
<td>constant fps drops with Intel and Radeon on Source games
</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>x86-64 (AMD64)
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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>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Mesa core
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>stephane.travostino@gmail.com
</td>
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<p>
<div>
<pre>I'm experiencing constant fps drops every few seconds with both intel and
radeon cards (the latter with DRI_PRIME=1) on Source games,
When using the intel card and INTEL_DEBUG=perf I see "recompiling fragment
shader" messages during drops, see <a href="http://pastebin.com/5zV9uuRb">http://pastebin.com/5zV9uuRb</a>
This messages repeat every drop, and the games goes from the maximum 40fps for
a couple of seconds to ~10 fps for 3/4 seconds.
This happens with the radeon card too, and with
GALLIUM_HUD=fps,buffer-wait-time I see the latter parameter increasing to
around 5k during fps drops.
This happens with Counter Strike: Global Offensive and Left 4 Dead 2 (only
games available for testing), also when standing still in an empty black room.
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) -- SANDYBRIDGE
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] (rev ff)
OS Archlinux x86-64 + Linux 3.18
Mesa git version 67105.0c7f895</pre>
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