Threadump analyzed Learning plan

1) Thread Dump overview & fundamentals

2) Thread Dump generation techniques and available tools

3) Thread Dump format -Sun Hotspot

4) Thread Stack Trace explanation and interpretation

5) Thread Dump analysis and correlation techniques

6) Thread Dump common problem patterns

• Thread race,
• deadlock,
• hanging IO calls,
• garbage collection / OutOfMemoryError problems,
• infinite looping etc.

7) Thread Dump examples via real life case studies

 

看Java StackTrace的各种方法:

1.  JPS 获取 PID –> jstack <optional>PID.

    -F  to force a thread dump. Use when jstack <pid> does not respond (process is hung)
    -m  to print both java and native frames (mixed mode)
    -l   long listing. Prints additional information about locks

2. Visual VM

如果profiling remote jvm,需要在jvm configure里面加

-Dcom.sun.management.jmxremote.port=3333     

-Dcom.sun.management.jmxremote.ssl=false 
   -Dcom.sun.management.jmxremote.authenticate=false 

http://docs.oracle.com/javase/6/docs/technotes/guides/visualvm/jmx_connections.html

3. Btrace, 自带Sample里面的代码

@BTrace
public class JStack {
    static {
        deadlocks(false);
        jstackAll();
        exit(0);
    }
}

转载于:https://www.cnblogs.com/robinw/archive/2012/12/20/2826511.html