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[PATCH 0/4] NUMA improvements with task wakeup and load balancing

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With these patches, and Peter Zijlstra's select_idle_sibling
scalability improvement, Jirka has seen these performance
gains on a 4.11 kernel:

NAS shows improvements in range 20-100%
SPECjbb2005 shows improvements around 6-8% in the single instance mode
SPECjvm2008 - improvements around 10%

Unfortunately the full set of tests takes about a week to
run, so numbers are not broken out for individual patches.

We have done previous runs with other scheduler changes,
which did not work out - they showed improvements on some
workloads, and regressions on others.

4.11 performance still lags behind 3.10 for some workloads.
I am trying to figure out why, and close that gap.

Diffstat:

 fair.c |  271 +++++++++++++++++++++--------------------------------------------
 1 file changed, 88 insertions(+), 183 deletions(-)

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[PATCH 0/4] NUMA improvements with task wakeup and load balancing riel@redhat.com - 2017-06-23 19:00 +0200
  [PATCH 1/4] sched,numa: override part of migrate_degrades_locality when idle balancing riel@redhat.com - 2017-06-23 19:00 +0200
    Re: [PATCH 1/4] sched,numa: override part of  migrate_degrades_locality when idle balancing Ingo Molnar <mingo@kernel.org> - 2017-06-24 09:00 +0200
      Re: [PATCH 1/4] sched,numa: override part of  migrate_degrades_locality when idle balancing Rik van Riel <riel@redhat.com> - 2017-06-25 01:50 +0200
    [tip:sched/core] sched/numa: Override part of  migrate_degrades_locality() when idle balancing tip-bot for Rik van Riel <tipbot@zytor.com> - 2017-06-24 09:30 +0200
  [PATCH 2/4] sched: simplify wake_affine for single socket case riel@redhat.com - 2017-06-23 19:00 +0200
    [tip:sched/core] sched/fair: Simplify wake_affine() for the single  socket case tip-bot for Rik van Riel <tipbot@zytor.com> - 2017-06-24 09:30 +0200

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