Virtual Machine Memory Profiler (Java Heap Memory Observe Tool)

The Java Heap Memory Observe Tool (also known as the Heap Walker) records detailed information about the Java heap at a specific point in the virtual machine execution. It collects and displays:

• global pointers

• data for all objects (classes, sizes, addresses and references)

• addresses for all roots

• names of all classes

Please note the following:

• The memory profiler uses the same connection technology as the Java debugger(see “On-device Debugging Procedure”). Because they use the same transport layer, the memory profiler and Java debugger cannot be used simultaneously.

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  Note - For the memory profiler, the Xrunjdwp -suspend option must be set to n.

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• The memory monitor slows down your application startup because every object created is recorded.

• The memory usage you observe with the emulator is not exactly the same as memory usage on a real device. Remember, the emulator does not represent a real device, it is just one possible implementation of its supported APIs.

See also: Run the Java Heap Memory Observe Tool