找出Java进程ID pid的N种方法

2022-03-26 22:56:05

拿到进程ID pid能做些什么呢？

暴力的杀掉它，比如：kill -9 123, taskkill /PID 123, 123也就是你要kill的pid。

使用 jinfo:可以输出并修改运行时的java 进程的opts（选项，项目项）。

如：jinfo 56860

Attaching to process ID 56860, please wait...

Debugger attached successfully.

Server compiler detected.

JVM version is 25.31-b07

Java System Properties:

java.runtime.name = Java(TM) SE Runtime Environment

java.vm.version = 25.31-b07

sun.boot.library.path = D:\Java\jdk\jre\bin

java.vendor.url = http://java.oracle.com/

java.vm.vendor = Oracle Corporation

path.separator = ;

java.rmi.server.randomIDs = true

file.encoding.pkg = sun.io

java.vm.name = Java HotSpot(TM) 64-Bit Server VM

sun.os.patch.level = Service Pack 1

sun.java.launcher = SUN_STANDARD

user.script =

user.country = CN

user.dir = D:\javaProject\javatrans

java.vm.specification.name = Java Virtual Machine Specification

java.runtime.version = 1.8.0_31-b13

……省略N行

使用jmap:打印出某个java进程（使用pid）内存内的所有'对象'的情况（如：产生那些对象，及其数量）。

如：jmap 56860

Attaching to process ID 56860, please wait...

Debugger attached successfully.

Server compiler detected.

JVM version is 25.31-b07

0x000000000f000000 24K C:\Program Files\NVIDIA Corporation\CoProcManage

r\detoured.dll

0x0000000057e70000 840K D:\Java\jdk\jre\bin\msvcr100.dll

0x0000000069d90000 212K D:\Java\jdk\jre\bin\jdwp.dll

0x000000006a0f0000 8552K D:\Java\jdk\jre\bin\server\jvm.dll

0x000000006c760000 140K D:\Java\jdk\jre\bin\instrument.dll

0x000000006e540000 52K D:\Java\jdk\jre\bin\management.dll

0x000000006e550000 68K D:\Java\jdk\jre\bin\nio.dll

0x000000006ee40000 104K D:\Java\jdk\jre\bin\net.dll

0x000000006fc30000 32K D:\Java\jdk\jre\bin\npt.dll

0x0000000070e10000 36K D:\Java\jdk\jre\bin\dt_socket.dll

0x0000000070e20000 88K D:\Java\jdk\jre\bin\zip.dll

0x0000000071220000 160K D:\Java\jdk\jre\bin\java.dll

0x0000000071400000 60K D:\Java\jdk\jre\bin\verify.dll

0x0000000076e70000 1000K C:\Windows\system32\USER32.dll

0x0000000076f70000 1152K C:\Windows\system32\kernel32.dll

……省略N行