哪个Java HotSpot JIT编译器正在运行? [英] Which Java HotSpot JIT compiler is running?

问题描述

我想知道HotSpot Java的无VM参数调用是否正在使用-client，-server或分层编译选项运行.当我不提供任何VM参数时，默认情况下选择哪一个?有没有一种方法可以输出有关正在运行哪个JIT编译器的诊断信息?

I would like to know if my no VM argument invocation of HotSpot Java is running with -client, -server, or tiered compilation options. When I supply no VM arguments, which one is chosen by default? Is there a way to output diagnostics about which JIT compiler is running?

推荐答案

假设这是热点:

-XshowSettings:vm

例如，在我的Windows框上，我得到以下输出:

For example, on my Windows box I get output of:

VM settings:
    Max. Heap Size (Estimated): 1.77G
    Ergonomics Machine Class: client
    Using VM: Java HotSpot(TM) 64-Bit Server VM

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