Task manager

Task Manager can help you determine if performance issues are memory based or processor based. In the case of memory based issues, Task Manager can help you determine which processes are using memory.

To determine which processes are using the most physical memory, switch to the Processes tab and then sort by Mem Usage. The Rational® Application Developer image name is javaw.exe. The WebSphere® test server image name is java.exe.

At the bottom of the window is the Commit Charge number. If the Commit Charge is higher than the amount of physical memory that you have on your system, then your system may be thrashing. If your system is thrashing, reduce the amount of memory that is required or add memory to improve performance.

Memory is a resource that needs to be conserved, Task Manager will show you where your memory is allocated.

You can also see how much memory is being used by turning on the Show heap status preference in Rational Application Developer. You can find this option in the preferences dialog. To open the workspace preferences dialog, click Window > Preferences > General. Select Show heap status. The heap status indicator displays in the status bar.

The heap status indicator shows you how much of the heap is used out of the total heap.

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