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Whats the difference between heap usage and total object range?

April 26, 2017difference heap object range total usage

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Whats the difference between heap usage and total object range?

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The heap usage is the sum of the sizes of all the objects in the heap dump. So it’s the total amount of heap space used. Note: Heap dumps aren’t guaranteed to show absolutely everything in the heap. The total object range is the size in bytes from the start of the first object to the end of the last object. This gives you an idea of the address range of the objects in the heap. Note that, depending on JVM, there may be multiple heaps, or the heap may not be a contiguous block of address space.