Messages in this thread | | | From | Mel Gorman <> | Subject | [PATCH 0/2] Adjust NUMA imbalance for multiple LLCs | Date | Thu, 25 Nov 2021 15:19:39 +0000 |
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Commit 7d2b5dd0bcc4 ("sched/numa: Allow a floating imbalance between NUMA nodes") allowed an imbalance between NUMA nodes such that communicating tasks would not be pulled apart by the load balancer. This works fine when there is a 1:1 relationship between LLC and node but can be suboptimal for multiple LLCs if independent tasks prematurely use CPUs sharing cache.
The series addresses two problems -- inconsistent use of scheduler domain weights and sub-optimal performance when there are many LLCs per NUMA node.
include/linux/sched/topology.h | 1 + kernel/sched/fair.c | 26 +++++++++++++++----------- kernel/sched/topology.c | 24 ++++++++++++++++++++++++ 3 files changed, 40 insertions(+), 11 deletions(-)
-- 2.31.1
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