annual-report-2024.md

2024 Annual Report: SIG Scheduling

Current initiatives and Project Health

1. What work did the SIG do this year that should be highlighted?

• Performance improvement
  • Iterated on QueueingHints towards re-enabling the feature. (KEP-4247)
  • Introduced asynchronous preemption (KEP-4832) when there are pods to be preempted.
  • Improved the internal scheduling performance test suite (scheduler-perf) to cover more scenarios and alert us when the degradation is introduced.
• DRA: Added DRA scheduling with the structured parameters, replacing classic DRA (KEP-4381).

2. Are there any areas and/or subprojects that your group needs help with (e.g. fewer than 2 active OWNERS)?

• scheduler-plugins
• kwok

3. Did you have community-wide updates in 2024 (e.g. KubeCon talks)?

• Kubecon EU 2024: SIG_Scheduling Intro & Deep Dive
• Kubecon NA 2024: SIG_Scheduling Intro & Updates

4. KEP work in 2024 (v1.30, v1.31, v1.32):

• Alpha

  • 4816 - DRA Prioritized List - v1.32
  • 4832 - Asynchronous Preemption - v1.32

• Beta

  • 3633 - Introduce MatchLabelKeys and MismatchLabelKeys to PodAffinity and PodAntiAffinity - v1.31
  • 4247 - Per-plugin callback functions for efficient requeueing in the scheduling queue - v1.32

• Stable

  • 3022 - Tuning the number of domains in PodTopologySpread - v1.30
  • 3521 - Pod Scheduling Readiness - v1.30
  • 3838 - Pod Mutable Scheduling Directives - v1.30

Subprojects

Continuing:

• cluster-capacity
• descheduler
• kube-scheduler-simulator
• kube-scheduler-wasm-extension
• kueue
• kwok
• scheduler
• scheduler-plugins

Working groups

New in 2024:

• Device Management
• Serving Continuing:
• Batch
• Policy
• Structured Logging

Operational

Operational tasks in sig-governance.md:

• README.md reviewed for accuracy and updated if needed
• CONTRIBUTING.md reviewed for accuracy and updated if needed
• Other contributing docs (e.g. in devel dir or contributor guide) reviewed for accuracy and updated if needed
• Subprojects list and linked OWNERS files in sigs.yaml reviewed for accuracy and updated if needed
• SIG leaders (chairs, tech leads, and subproject leads) in sigs.yaml are accurate and active, and updated if needed
• Meeting notes and recordings for 2024 are linked from README.md and updated/uploaded if needed