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<body><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> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BXT]15% performance drop in SynMark v7.0 Multithread use-case"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102334">bug 102334</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>RESOLVED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BXT]15% performance drop in SynMark v7.0 Multithread use-case"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102334#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BXT]15% performance drop in SynMark v7.0 Multithread use-case"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102334">bug 102334</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> Commit-ID: a731ebe6f17bff9e7ca12ef227f9da4d5bdf8425
Gitweb:
<a href="http://git.kernel.org/tip/a731ebe6f17bff9e7ca12ef227f9da4d5bdf8425">http://git.kernel.org/tip/a731ebe6f17bff9e7ca12ef227f9da4d5bdf8425</a>
Author: Peter Zijlstra <<a href="mailto:peterz@infradead.org">peterz@infradead.org</a>>
AuthorDate: Wed, 6 Sep 2017 12:51:31 +0200
Committer: Ingo Molnar <<a href="mailto:mingo@kernel.org">mingo@kernel.org</a>>
CommitDate: Thu, 7 Sep 2017 09:29:31 +0200
sched/fair: Fix wake_affine_llc() balancing rules
Chris Wilson reported that the SMT balance rules got the +1 on the
wrong side, resulting in a bias towards the current LLC; which the
load-balancer would then try and undo.
Reported-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Tested-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Signed-off-by: Peter Zijlstra (Intel) <<a href="mailto:peterz@infradead.org">peterz@infradead.org</a>>
Cc: Andy Lutomirski <<a href="mailto:luto@kernel.org">luto@kernel.org</a>>
Cc: Linus Torvalds <<a href="mailto:torvalds@linux-foundation.org">torvalds@linux-foundation.org</a>>
Cc: Mike Galbraith <<a href="mailto:efault@gmx.de">efault@gmx.de</a>>
Cc: Peter Zijlstra <<a href="mailto:peterz@infradead.org">peterz@infradead.org</a>>
Cc: Thomas Gleixner <<a href="mailto:tglx@linutronix.de">tglx@linutronix.de</a>>
Cc: <a href="mailto:linux-kernel@vger.kernel.org">linux-kernel@vger.kernel.org</a>
Fixes: 90001d67be2f ("sched/fair: Fix wake_affine() for
!NUMA_BALANCING")
Link:
<a href="http://lkml.kernel.org/r/20170906105131.gqjmaextmn3u6tj2@hirez.programming.kicks-ass.net">http://lkml.kernel.org/r/20170906105131.gqjmaextmn3u6tj2@hirez.programming.kicks-ass.net</a>
Signed-off-by: Ingo Molnar <<a href="mailto:mingo@kernel.org">mingo@kernel.org</a>></pre>
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