How to Install / Upgrade: Kubernetes v1.36: PSI Metrics for Kubernetes Graduates to GA
By Dillip Chowdary • Jul 21, 2026 • Source: Kubernetes Blog
Kubernetes v1.36 graduates Pressure Stall Information (PSI) metrics to General Availability. Unlike traditional utilization metrics, PSI metrics measure tasks stalled and time lost in percentages of time across CPU, memory, and I/O to identify resource saturation before it becomes an outage.
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To install or upgrade, update your cluster to the Kubernetes v1.36 release. Upgrading to Kubernetes v1.36 enables access to a stable and reliable interface for PSI metrics across the ecosystem.
To verify the upgrade, check that your cluster reports PSI metrics for task stalls and time lost across CPU, memory, and I/O. Be aware that PSI functionality relies on the underlying Linux kernel feature implemented in 2018.
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