Incident Library

API · MCP 한국어

API and MCP kubegap Corrections and proposals

Incident Library

API · MCP 한국어

Symptom

CPU throttling

CPU 스로틀링 · cpu-throttling

4 cases · 2020 to 2026

Root cause Capacity exhaustion2 Software defect2

Component Container CPU limit4 Linux kernel2 Horizontal pod autoscaler1 kubelet1 Language runtime settings1

Contributing factor Monitoring blind spot3 Unpatched known bug2 Unverified assumption1 Unreviewed defaults1

Organisation Buffer1 Kevin1 Omio1 Temporal1

Cases

IL-0181 A traffic spike from an external community post pushed product API pods into CPU throttling under a 1-core limit, and an e-commerce product page slowed down while every pod stayed RunningKevin · 2026
Root cause Capacity exhaustion
IL-0028 Temporal History service latency rose because its pods were CPU-throttled while CPU usage read below 60 percentTemporal · 2023
Root cause Capacity exhaustion
IL-0029 Slow user-facing services from CPU throttling on containers that used far less CPU than their limit

View on the graph

Node operating system image1

Buffer · 2020

Root cause Software defect

IL-0012 CPU limits and an unpatched kernel CFS quota bug throttled multi-threaded services into stalls, failed health checks and timeoutsOmio · 2020

Root cause Software defect