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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 2x Media CPU power usage, or 15% perf drop when CPU bound GPU use-case is TDP limited"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108700#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 2x Media CPU power usage, or 15% perf drop when CPU bound GPU use-case is TDP limited"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108700">bug 108700</a>
from <span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span></b>
<pre>STIBP fixes in drm-tip v4.20-rc5 fix the CPU bound 3D cases performance
(test-case 1).
However, those fixes, nor disabling Spectre mitigation completely from kernel
command line (checked by David), do NOT have any impact on the Media
performance regression (test-case 2).
David will try to bisect the Media perf regression.</pre>
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