CPU Profiling Guide

Phase 1: Symptom Assessment

1. Characterize the CPU issue
   • Sustained high CPU (> 80% continuously)
   • CPU spikes correlated with specific operations
   • High CPU at low traffic (idle CPU waste)
   • CPU-bound latency (slow responses despite available I/O)
   • One core saturated (single-threaded bottleneck)
2. Collect baseline metrics
   • CPU utilization per core and per process
   • Thread/goroutine count
   • Context switch rate
   • System vs. user CPU time ratio
3. Correlate CPU with application events (requests, jobs, deployments)

CPU Baseline