linux-kernel - [PATCH 0/3] sched/fair: Reduce contention on tg's load

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Date:	Wed, 25 Nov 2015 14:09:37 -0500
From:	Waiman Long <Waiman.Long@....com>
To:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org,
	Scott J Norton <scott.norton@....com>,
	Douglas Hatch <doug.hatch@....com>,
	Waiman Long <Waiman.Long@....com>
Subject: [PATCH 0/3] sched/fair: Reduce contention on tg's load_avg

This patch series tries to reduce contention on task_group's load_avg
to improve system performance. It also tries to optimize the use of
idle_cpu() call in update_sg_lb_stats().

Waiman Long (3):
  sched/fair: Avoid redundant idle_cpu() call in update_sg_lb_stats()
  sched/fair: Move hot load_avg into its own cacheline
  sched/fair: Use different cachelines for readers and writers of
    load_avg

 kernel/sched/core.c  |    9 +++++++++
 kernel/sched/fair.c  |   40 +++++++++++++++++++++++++++++++++++-----
 kernel/sched/sched.h |   15 ++++++++++++++-
 3 files changed, 58 insertions(+), 6 deletions(-)

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