Q&A
Q&AWhy can a pod be CPU-throttled while its node is only 40% busy?
CPU quota is enforced per container, so node-wide unused capacity may not be available beyond its limit.
Read the concise answer
A container can exhaust its CFS quota during a period even if other node CPUs are idle. Inspect container throttling counters and request/limit values alongside latency. Decide whether the limit is needed, whether requests/HPA targets match demand, or whether CPU work should be reduced; do not infer container headroom from node averages.