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<b><a class="bz_bug_link
bz_status_VERIFIED bz_closed"
title="VERIFIED FIXED - [GEN9+] 50% perf drop in SynMark Fill* tests (E2E RBC gets disabled?)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107223#c21">Comment # 21</a>
on <a class="bz_bug_link
bz_status_VERIFIED bz_closed"
title="VERIFIED FIXED - [GEN9+] 50% perf drop in SynMark Fill* tests (E2E RBC gets disabled?)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107223">bug 107223</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>(In reply to Eero Tamminen from <a href="show_bug.cgi?id=107223#c20">comment #20</a>)
<span class="quote">> FYI: this series seems to have fixed also earlier perf regression (from
> around May) that was visible on GEN6-GEN8 in (unity/compiz) composited
> windowed 3D benchmarks, but only with modifier enabled gfxstack.</span >
Btw. while it improved a lot of onscreen tests on older GENs too, it dropped
perf on older GENs in SynMark ZBuffer & VSInstancing tests which draw a large
amount of geometry on top of each other. Apparently caching changed so that
(depth?) reads are now more expensive on those older (6-8) GENs?</pre>
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