NetEase Cloud Music Tech Team
May 26, 2022 · Backend Development
Investigation and Warm‑up Mitigation of JVM C2 CompilerThread CPU Spikes During Service Startup
The article details a real‑world case where JVM C2 CompilerThread CPU spikes during service startup caused request timeouts and GC pressure, explains how profiling identified the JIT compilation as the root cause, and describes a warm‑up replay strategy that pre‑compiles hotspot code to eliminate the spikes and stabilize deployments.
C2 CompilerThreadGCJIT
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