Warming up the JVM: CRaC and other tricks
summary
Covers JVM startup and warmup delays caused by JIT compilation and profiling, and compares solutions including manual warmup, AOT compilation, reusing JIT profiles, and Coordinated Restore at Checkpoint (CRaC). Explains how to monitor JIT compilation with concrete examples and discusses pros, cons, and trade-offs of each approach for reducing cold-start and warmup time.
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chapters (9)
- 0:00Introduction
- 1:49JVM warmup problem
- 9:44JIT tuning with flags
- 13:13JIT flag experiments
- 19:51Manual app warmup
- 23:03JIT stats persistence
- 25:10CRaC: freeze and restore
- 33:02Solution comparison
- 35:09Q&A
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