[Bug 102334] [BXT]15% performance drop in SynMark v7.0 Multithread use-case

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102334

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEEDINFO                    |RESOLVED

--- Comment #8 from Chris Wilson <chris at chris-wilson.co.uk> ---
            Commit-ID:  a731ebe6f17bff9e7ca12ef227f9da4d5bdf8425
            Gitweb:    
http://git.kernel.org/tip/a731ebe6f17bff9e7ca12ef227f9da4d5bdf8425
            Author:     Peter Zijlstra <peterz at infradead.org>
            AuthorDate: Wed, 6 Sep 2017 12:51:31 +0200
            Committer:  Ingo Molnar <mingo at kernel.org>
            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 <chris at chris-wilson.co.uk>
            Tested-by: Chris Wilson <chris at chris-wilson.co.uk>
            Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
            Cc: Andy Lutomirski <luto at kernel.org>
            Cc: Linus Torvalds <torvalds at linux-foundation.org>
            Cc: Mike Galbraith <efault at gmx.de>
            Cc: Peter Zijlstra <peterz at infradead.org>
            Cc: Thomas Gleixner <tglx at linutronix.de>
            Cc: linux-kernel at vger.kernel.org
            Fixes: 90001d67be2f ("sched/fair: Fix wake_affine() for
!NUMA_BALANCING")
            Link:
http://lkml.kernel.org/r/20170906105131.gqjmaextmn3u6tj2@hirez.programming.kicks-ass.net
            Signed-off-by: Ingo Molnar <mingo at kernel.org>

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20170907/d683a8a1/attachment.html>