This article compares the Garbage Collection (GC) performance of OpenJDK and GraalVM. GraalVM's concurrent, generational collector outperforms OpenJDK by exhibiting higher throughput (99.947%) and lower average pause times (450 ms vs. 2.5 secs). It concludes that GraalVM's GC mechanism is more efficient in managing memory, benefiting application performance.
The article discusses the limitations of CI/CD pipelines, which primarily analyze macro-level metrics, in identifying performance issues like OutOfMemoryError. It emphasizes the importance of micrometrics—such as garbage collection throughput, thread states, and memory waste—in monitoring applications to preemptively address performance problems and improve software quality in production.