jinfo命令

jinfo(Configuration Info for Java) 命令的作用是实时的查看和调整虚拟机的参数。

命令格式：

jinfo [option] pid

Options

no-option

Prints both command-line flags and system property name-value pairs.

-flag name

Prints the name and value of the specified command-line flag.

-flag [+|-]name

enables or disables the specified Boolean command-line flag.

-flag name=value

Sets the specified command-line flag to the specified value.

-flags

Prints command-line flags passed to the JVM.

-sysprops

Prints Java system properties as name-value pairs.

-h or -help

Prints a help message

 

官方文档:http://docs.oracle.com/javase/8/docs/technotes/tools/unix/jinfo.html