Kubernetes v1.36: PSI Metrics for Kubernetes Graduates to GA

Kubernetes v1.36 brings PSI metrics to GA for resource contention monitoring at node, pod, and container levels.

• •PSI tracks stalled tasks and lost time across CPU, memory, and I/O with 10s, 60s, 300s moving averages
• •Kubelet overhead is minimal: 0.1 cores or 2.5% of node capacity
• •Kernel PSI adds 0.925-3.125% overhead under heavy load
• •GA improved metric emission to detect OS support and prevent false alarms
• •Nodes require Linux kernel 4.20+ with cgroup v2 and CONFIG_PSI=y enabled

This summary was automatically generated by AI based on the original article and may not be fully accurate.