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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BDW Bisected] OglDrvCtx performance reduced by ~30% after use true PPGTT in Gen8+"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87726#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BDW Bisected] OglDrvCtx performance reduced by ~30% after use true PPGTT in Gen8+"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87726">bug 87726</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>There are a number of patches to address this, with review outstanding. The
regression here is due to the large number of context and list entries
generated by OglDrvCtx. The patches try to compensate by making context
creation quicker (the goal of that particular microbenchmark) and introduce
hashtables to avoid the linear list walks.</pre>
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