tomcat-以前运行的类仍在内存中加载 [英] tomcat - their classes from previous runs are still loaded in memory

问题描述

当停止我的项目时，tomcat说:

when stop my project , tomcat say :

以下Web应用程序已停止(重新加载，取消部署)，但它们先前运行的类仍在 加载到内存中，从而导致内存泄漏(使用事件探查器进行确认).

The following web applications were stopped (reloaded, undeployed), but their classes from previous runs are still loaded in memory, thus causing a memory leak (use a profiler to confirm) .

我们在哪里发现内存中剩下哪些类?

Where we find that Which classes are left in memory ?

请帮助我.

推荐答案

您可以运行jmap -histo，这将向您显示已加载的类.

You can run jmap -histo which will show you loaded classes.

例如:

jmap -histo[:live] <pid>
    to connect to running process and print histogram of java object heap
    if the "live" suboption is specified, only count live objects

Example: jmap -dump:live,format=b,file=heap.bin <pid>

另一种方法是启用类加载调试信息，并执行一些脚本来检测剩下的内容.

Another way is to enable classloading debug information and do some scripting to detect what is left loaded.

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