cgroup

2 related posts

September 26, 2026KubernetesKubernetes Internalscgroup

CPU is only 30% used, so why is it throttled? Inside the 100ms quota of a CPU limit

A developer reports high latency, but the CPU on the dashboard looks idle. Follow the 100ms cgroup quota to see how a CPU limit is enforced on the Node, and what to do about it.

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September 26, 2026KubernetesKubernetes Internalscgroup

Hands-on: reproduce "only 30% CPU, yet throttled" in kind

Read cpu.max and cpu.stat in a throwaway local cluster, build a service that gets throttled by groups of requests, then measure GOMAXPROCS, adding replicas, raising the limit, cpu.weight, and what changes on a busy Node.

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