Java垃圾回收时间? [英] Java Garbage Collection Time?

问题描述

我在Java中有一个对性能非常敏感的应用程序. (我知道我实际上应该使用C或其他东西.但是现在是Java.)我试图避免创建和丢弃对象.现在，我需要知道仍在进行多少垃圾收集.

I have a very performance sensitive application in Java. (I know I should actually use C or something else. But it's Java now.) I'm trying to avoid creating and throwing away objects. Now I need to know how much garbage collecting is going on still.

如何查找?

如果可能的话，我想要一个数毫秒或十亿分之一秒的数字，不需要安装更多软件.

If possible I would like to have a sort of number in milliseconds or nanoseconds something that doesn't require installation of more software.

推荐答案

或者您可以让JVM打印GC活动.

Or you can let JVM print the GC activity.. These settings I have:

-verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -XX:+PrintTenuringDistribution -Xloggc:logs/gc.log

GC活动被打印到文件 logs/gc.log ..

GC activity is printed to a file logs/gc.log..

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