1)ssunel@VTEKPSSUNEL:~$ top -c -b -H -n1 -d1 | head -n 20 | grep 'java\|CPU'
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28763 ssunel 20 0 2893m 821m 10m R 100 10.3 0:38.97 /usr/java/bin/java
28518 ssunel 20 0 2893m 821m 10m S 2 10.3 0:00.30 /usr/java/bin/java
28667 ssunel 20 0 2893m 821m 10m S 2 10.3 0:00.07 /usr/java/bin/java
28733 ssunel 20 0 2893m 821m 10m S 2 10.3 0:00.11 /usr/java/bin/java
2)Go to : here or use any other converter & convert decimal thread-id(s) [28763 - 28518 - 28667 - 28733 ] to hexedecimal.
Java thread identifiers will be something like that :
pid : nid
28763 : 0x705b
28518 : 0x6f66
28667 : 0x6ffb
28733 : 0x703d
3)ssunel@VTEKPSSUNEL:~$ jstack <pid>
4) Search for the nativeId(s) in the thread dump : nid=0x705b or nid=0x6f66 or nid=0x6ffb or nid=0x703d
Example:
"SocketListener" daemon prio=10 tid=0x0f474c00 nid=0x705b runnable [0x0386e000]
java.lang.Thread.State: RUNNABLE
at java.lang.Throwable.fillInStackTrace(Native Method)
- locked <0x299364f4> (a java.nio.channels.NotYetBoundException)
at java.lang.Throwable.<init>(Throwable.java:181)
at java.lang.Exception.<init>(Exception.java:29)
at java.lang.RuntimeException.<init>(RuntimeException.java:32)
at java.lang.IllegalStateException.<init>(IllegalStateException.java:27)
at java.nio.channels.NotYetBoundException.<init>(NotYetBoundException.java:30)
at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:139)
- locked <0x6567a198> (a java.lang.Object)
at com.mycompany.smppgwsocket.smpp34server.Smpp34ServerSocketListener.run(Smpp34ServerSocketListener.java:08)
java.lang.Thread.State: RUNNABLE
at java.lang.Throwable.fillInStackTrace(Native Method)
- locked <0x299364f4> (a java.nio.channels.NotYetBoundException)
at java.lang.Throwable.<init>(Throwable.java:181)
at java.lang.Exception.<init>(Exception.java:29)
at java.lang.RuntimeException.<init>(RuntimeException.java:32)
at java.lang.IllegalStateException.<init>(IllegalStateException.java:27)
at java.nio.channels.NotYetBoundException.<init>(NotYetBoundException.java:30)
at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:139)
- locked <0x6567a198> (a java.lang.Object)
at com.mycompany.smppgwsocket.smpp34server.Smpp34ServerSocketListener.run(Smpp34ServerSocketListener.java:08)
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