java jstack thread 映射 linux 线程(LWP)

1.首先

jstack -l 18975
"http-342.877.573.944-8080-360" daemon prio=10 tid=0x0000002adaba9c00 nid=0x754c in Object.wait() [0x00000000595bc000..0x00000000595bccb0]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on  (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
        at java.lang.Object.wait(Object.java:485)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:416)
        - locked  (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:442)
        at java.lang.Thread.run(Thread.java:619)

其中nid=0x754c就是linux 的lwp的16进制表示，转换为10进制为30028

2.然后 top -L -p 18975就可以观察到哪个进程耗费资源了(top -L -p 18957中的pid就是lwp)

参考地址：http://stackoverflow.com/questions/222108/getting-the-java-thread-id-and-stack-trace-of-run-away-java-thread