-XX:+ PrintGC和-verbose:gc之间的区别 [英] Difference between -XX:+PrintGC and -verbose:gc

问题描述

我想了解以下两者之间的区别: -XX:+PrintGC和-verbose:gc 显然，这些看起来很相似.

I want to understand the difference between: -XX:+PrintGC and -verbose:gc Apparently these look similar.

本文未列出verbose:gc http://www.oracle.com/technetwork/articles/java /vmoptions-jsp-140102.html

我还看到了两个问题:如何将详细的垃圾回收输出重定向到文件?和 https://stackoverflow.com/a/1818039/2266682 但了解得不多.

I also saw these two questions: How to redirect verbose garbage collection output to a file? and https://stackoverflow.com/a/1818039/2266682 but couldn't get much understanding.

推荐答案

在JDK 8中，-verbose:gc是

In JDK 8 -verbose:gc is an exact alias for -XX:+PrintGC.

但是，-verbose:gc是标准选项，而-XX:+PrintGC不是标准选项.

However, -verbose:gc is a standard option, while -XX:+PrintGC is not.

-XX:+PrintGC，而不再推荐使用统一日志记录选项-Xlog:gc，请参见 JEP 158 .
-verbose:gc仍可在JDK 9和10中使用.

-XX:+PrintGC is deprecated since JDK 9 in favor of unified logging option -Xlog:gc, see JEP 158.
-verbose:gc still works in JDK 9 and 10.

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