IBM’s NATIVEMEMINFO is a critical diagnostic section found within an IBM JVM (or Eclipse OpenJ9) Javacore text dump. It provides a comprehensive, high-level summary of the virtual memory allocated by the Java runtime, allowing engineers to isolate native memory leaks and unexpected process growth outside of the standard Java heap. Core Function of NATIVEMEMINFO
When a Java process inflates in the operating system but the standard Java Heap remains stable, the memory leak resides in the native heap. The NATIVEMEMINFO section tracks exactly how the JVM allocates this native memory. It categorizes tracking into distinct pools: Best practices for JVM memory issues – IBM
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