Why Kubernetes Pod Resource Limits Cause Latency Spikes

Episode notes

Episode 24 of DevOps Daily with Fexingo digs into a subtle but painful Kubernetes performance trap: the relationship between pod resource limits (CPU throttling) and application latency. Lucas and Luna examine a real-world case from a fintech company where setting CPU limits too low caused tail-latency spikes during normal traffic. They explain the difference between compressible and incompressible resources, how the Completely Fair Scheduler enforces CPU limits, and why setting requests without limits — or using the 'burst' capability wisely — often delivers better performance. The hosts also cover monitoring for throttling, the role of cgroup v2, and the trade-offs of over-provisioning. This episode is essential for any team running latency-sensitive workloads on Kubernetes. #Kubernetes #DevOps #Performance #CPULimits #Latency #Throttling #CFS #CgroupV2 #PodResources #Fintech #SiteReliabilityEngineering #ContainerOrchestration #CloudNative #Infrastructure #Monitoring #FexingoBusiness #BusinessPodcast #Technology Keep every episode free: buymeacoffee.com/fexingo