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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BSW bisected] OglGSCloth/Lightsmark/CS/ Portal/ Half Life 2 games performance decreased by 15%-45%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90112#c47">Comment # 47</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BSW bisected] OglGSCloth/Lightsmark/CS/ Portal/ Half Life 2 games performance decreased by 15%-45%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90112">bug 90112</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to wendy.wang from <a href="show_bug.cgi?id=90112#c46">comment #46</a>)
<span class="quote">> Add intel_pstate=disable parameter does not fix this bug on BSW
> test with cs game,
> (bad- parent) vs. parent commit: -33%
>
> Bad next-queued kernel commit:
> 1854d5ca0dd7a9fc11243ff220a3e93fce2b4d3e
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Tue Apr 7 16:20:32 2015 +0100
>
> drm/i915: Deminish contribution of wait-boosting from clients
>
>
> parent next-queued kernel commit of 1854d5ca0
> commit 6ad790c0f5ac55fd13f322c23519f0d6f0721864
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Tue Apr 7 16:20:31 2015 +0100
>
> drm/i915: Boost GPU frequency if we detect outstanding pageflips</span >
The open question was whether the regression remains after
commit 8d3afd7d0e666b932e6fa15901e6280fe829a786
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Thu May 21 21:01:47 2015 +0100
drm/i915: Use spinlocks for checking when to waitboost</pre>
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