使用-XX：HeapDumpPath选项但希望集成进程ID [英] Using -XX:HeapDumpPath option but want to integrate the process id

问题描述

使用 -XX：+ HeapDumpOnOutOfMemoryError 时，如果指定路径下已存在转储文件，则JVM不会覆盖堆转储。我希望能够在非默认位置拥有多个堆转储，并且计划在堆转储路径中使用pid以允许它。

When using -XX:+HeapDumpOnOutOfMemoryError the JVM will not overwrite the heap dump if there is already a dump file under the specified path. I want to be able to have multiple heap dumps in a non-default location, and was planning on using the pid in the heap dump path in order to allow that.

然而，当我试图像这样指定参数时：

However, when I tried to specify the argument like so:

-XX:HeapDumpPath=some/heapdump/path/heapdump-%p.hprof

然后创建堆转储，我得到％p 而不是文件名中的实际pid。但是，使用％p 似乎可以使用 -XX：OnOutOfMemoryError 选项。是否有其他语法我应该用于 -XX：HeapDumpPath = ？

And then created a heap dump, I got %p and not the actual pid in the file name. However, the use of %p seems to work with the -XX:OnOutOfMemoryError option. Is there some other syntax that I'm supposed to use for -XX:HeapDumpPath=?

推荐答案

这可以是文件OR目录的路径。如果你有一个目录路径，默认情况下生成的文件名将包含pid。

That can be a path to a file OR directory. If you have a path to a directory, the generated file name will have pid in it by default.

http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

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