Kubernetes v1.34: PSI Metrics for Kubernetes Graduates to Beta

As Kubernetes clusters grow in size and complexity, understanding the health and performance of individual nodes becomes increasingly critical. We are excited to announce that as of Kubernetes v1.34, Pressure Stall Information (PSI) Metrics has graduated to Beta. What is Pressure Stall Information (PSI)? Pressure Stall Information (PSI) is a feature of the Linux kernel (version 4.20 and later) that provides a canonical way to quantify pressure on infrastructure resources, in terms of whether demand for a resource exceeds current supply. It moves beyond simple resource utilization metrics and instead measures the amount of time that tasks are stalled due to resource contention. This is a powerful way to identify and diagnose resource bottlenecks that can impact application performance. PSI exposes metrics for CPU, memory, and I/O, categorized as either some or full pressure: some The percentage of time that at least one task is stalled on a resource. This indicates some level of resourc