How to measure peak heap memory usage in Java?

Question

How to measure peak heap memory usage in Java? MemoryPoolMXBean keeps track of the peak usage per memory pool, but not the entire heap. And the peak heap usage is not simply the sum of different heap memory pools.

Answer 1

Did you think about using totalMemory() function from Runtime class - docs? Also there are some free tools like VisualVM or JStat, example:

jstat -gc <pid> <time> <amount>

Hope that helps.