Java VisualVM在OOME上启用堆转储 [英] Java VisualVM Enable Heap Dump on OOME

问题描述

根据文档，可以自动当应用程序遇到OutOfMemoryException时进行堆转储。

OutOfMemoryException进程刚从左侧菜单中消失。

此功能在VisualVM中如何工作？

According to documentation one could automatically take a heap dump when the application encounters an OutOfMemoryException.
After OutOfMemoryException process just disappear from left menu.
How does this feature works in VisualVM?

谢谢。

C：\ work \ temp> java -XX：HeapDumpPath = c：/work/temp/file.hprof -XX：+ HeapDumpOnOutOfMemoryError -jar example.jar

C:\work\temp>java -XX:HeapDumpPath=c:/work/temp/file.hprof -XX:+HeapDumpOnOutOfMemoryError -jar example.jar

推荐答案

据我所知，JVisualVM中的该选项相当于将 -XX：+ HeapDumpOnOutOfMemoryError 指定为JVM参数。这会导致JVM在遇到OutOfMemoryError时创建堆转储文件。然后可以将此文件加载到JVisualVM（或分析器）并在那里进行分析。存储文件的目录由 -XX：HeapDumpPath 参数定义。

As far as I know, that option in JVisualVM is equivalent to specifying -XX:+HeapDumpOnOutOfMemoryError as a JVM parameter. This causes the JVM to create a heap dump file when it encounters an OutOfMemoryError. This file can be then loaded into JVisualVM (or into a profiler) and analyzed there. The directory where the file is stored is defined by the -XX:HeapDumpPath parameter.

另请参阅：

• 带有HotSpot VM的Java SE 6故障排除指南


• Java HotSpot VM选项


• StackOverflow：使用HeapDumpOnOutOfMemoryError参数

• Troubleshooting Guide for Java SE 6 with HotSpot VM
• Java HotSpot VM Options
• StackOverflow: Using HeapDumpOnOutOfMemoryError parameter

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