Java applications utilize two types of memory: Java Heap and Native Memory. The Java Heap stores application objects and is managed by the Garbage Collector, while Native Memory contains essential runtime structures. Understanding these differences aids in diagnosing performance issues and resolving memory-related errors effectively, enhancing application performance and stability.
Native memory leaks in Java are infrequent but challenging to address. This post outlines methods for identifying and troubleshooting leaks, highlighting native memory regions like Metaspace, Threads, and Direct Buffers. By employing tools such as Native Memory Tracking (NMT), developers can effectively diagnose and manage these potential problems.
The JVM has internal memory regions, and Native Memory Tracking (NMT) helps find memory problems in these areas. NMT gives details on memory allocation and usage, making it useful for spotting memory leaks. To enable NMT, use the -XX option, and analyze the data for better application performance.