How To Find Default Configuration (e.g. -Xmx, -Xms) Settings (ergonomics) for JVM? 📎
JVM comes with "ergonomics" feature which tries to find the best possible JVM configuration for the execution environment.
The configuration choices suggested by JVM can be printed with:
java -XX:+PrintFlagsFinal
A fraction of the output for Java 8:
uintx MaxHeapSize := 4294967296 {product}
uintx InitialHeapSize := 268435456 {product}
bool UseG1GC = false {product}
(...)