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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [SKL GT3e guc bisected] ~10% performance drop in most benchmarks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97017#c29">Comment # 29</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [SKL GT3e guc bisected] ~10% performance drop in most benchmarks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97017">bug 97017</a>
from <span class="vcard"><a class="email" href="mailto:sagar.a.kamble@intel.com" title="Sagar Kamble <sagar.a.kamble@intel.com>"> <span class="fn">Sagar Kamble</span></a>
</span></b>
<pre>Performance drop is happening due intermittent lowering of GT frequency by Host
RPS. This lowering is happening due to burst of RP UP interrupts that makes
Host RPS adjustments go bad and overflow negative.
Kernel patch has been posted for trybot testing at
<a href="https://patchwork.freedesktop.org/patch/133064/">https://patchwork.freedesktop.org/patch/133064/</a>.
This fix will apply to all platforms.</pre>
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