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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IVB/BYT/HSW Bisected]Synmark2_DrvCtx performance reduced 50%~80%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84501#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [IVB/BYT/HSW Bisected]Synmark2_DrvCtx performance reduced 50%~80%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84501">bug 84501</a>
from <span class="vcard"><a class="email" href="mailto:lilix.cheng@intel.com" title="lili <lilix.cheng@intel.com>"> <span class="fn">lili</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=84501#c3">comment #3</a>)
<span class="quote">> So what is happening is that we are effectively leaking contexts, forcing us
> to evict and stall.</span >
git://people.freedesktop.org/~ickle/linux-2.6 requests
<span class="quote">> should contain the fix (in
> <a href="http://cgit.freedesktop.org/~ickle/linux-2.6/commit/">http://cgit.freedesktop.org/~ickle/linux-2.6/commit/</a>
> ?h=requests&id=4a9a7642673ec3365ce6de7fb91238ab996ac1f0) which should get
> full-ppgtt to within about 10% of aliasing-pgtt in OglDrvCtx. (Since we
> allocate and clear the entire PDE upon context creation, there will be
> measurable extra overhead.)</span >
This issue has been fixed with this patch.</pre>
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