Kubernetes v1.34 bumps Pressure Stall Information (PSI) metrics to Beta. Now kubelets expose kernel-level resource pressure—CPU, memory, and I/O—through the Summary API and Prometheus.
Instead of just tracking how much a resource gets used, PSI shows how often workloads get throttled or blocked. That means sharper node, pod, and container insights for autoscaling and troubleshooting.
Big upgrade: Metrics move from usage to contention. Less guessing, more fixing.
