Qu Tech

Dec 31, 2020 · Cloud Native

Kubernetes IPVS Estimation Timer: Root Cause of Network Jitter and Livepatch Fix

A production Kubernetes cluster experienced intermittent network jitter caused by the IPVS estimation_timer soft‑interrupt, and the article details how BPF tracing, perf analysis, and a kpatch live‑patch were used to identify and eliminate the latency without rebooting the nodes.