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Current version:
jmp.tar.gz
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Robert Olofsson
d94-rol@nada.kth.se
The first image show that character arrays are the instances that use the most memory.
The meaning of the columns are:
| Class | The class that has instances. |
| instances | The current number of allocated instances. |
| max instances | The maximum simultanious number of allocated instances. |
| Size | The current number of bytes instances of this class use. |
This image shows how object connect to each other. Finding the owner to objects is the easy way to find memory leaks.
In the next image we can see where the java program is spending time. The columns I value the most are the secs and calls. Note! The time used is real time, so if you have 10 threads and your application is running for 60 seconds you should see a total time of 600 seconds used.
The meaning of the columns are:
| Class | The class that holds the method. |
| method | The method that takes time. |
| secs | The number of seconds that this method has used. |
| calls | The number of calls to this method. |
| subs sec | The number of seconds that methods called from this method has taken. Recursive methods can show up big time here. |
Here is a method call graph. As we can see here the match method is recursivly called (via scanComment).
Here is a window showing all the threads in the system.
| Name | The name of the threads. |
| Group | The group of the thread. |
| Parent | The parent of the thread. |
| Contenation | The time this thread has spent waiting for a monitor. |
| Class | The class of the stack trace element. |
| Method | The method of the stack trace element. |
Here is the main control window.
