Johannes Bechberger • 1/9/2026

OpenJDK is faster than GraalVM Java*

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This article presents a microbenchmark comparing the startup time of OpenJDK (SapMachine) and GraalVM when running `java -version`. It finds OpenJDK significantly faster in this specific test, attributing the difference to GraalVM's JVMCI initialization. The author, a JVM developer at SAP, cautions against overgeneralizing from small benchmarks and references broader performance comparisons, while also teasing a future post on faster Java version checking.

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#performance #jvm #Java
OpenJDK is faster than GraalVM Java*

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