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

From: riel
Date: Fri Jun 23 2017 - 12:56:06 EST

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.


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