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KEP-4622keps/sig-node/4622-topologymanager-max-allowable-numa-nodes

New TopologyManager Policy which configure the value of maxAllowableNUMANodes

implementedstablesig-nodelatest v1.35
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In this KEP, we propose a new TopologyManager Policy Option called max-allowable-numa-nodes to configure the value of maxAllowableNUMANodes in the TopologyManager. The current hard-coded value of 8 was added as a stop-gap 4 years ago to mitigate the state explosion that occurs when trying to enumerate the possible NUMA affinities and generating their hints.… Full summary

In this KEP, we propose a new TopologyManager Policy Option called max-allowable-numa-nodes to configure the value of maxAllowableNUMANodes in the TopologyManager. The current hard-coded value of 8 was added as a stop-gap 4 years ago to mitigate the state explosion that occurs when trying to enumerate the possible NUMA affinities and generating their hints. By making this setting configurable, we give users the ability to increase this limit when appropriate.

Facts

Authors
@cyclinder@ffromani
Approvers
@klueska
Reviewers
@klueska@ffromani
PRR approvers
@jpbetzbeta@jpbetzstable
Tracking issue
#4622(opens GitHub in a new tab) opensig/nodestage/stable
Milestones
beta v1.31stable v1.35
Participating SIGs
none
Feature gates
TopologyManagerPolicyOptions
Created / last updated
2025-02-15 / none
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