[Groxx]

MAT is useful enough on its own to make me seriously consider Java almost everywhere. So many tricky memory leaks in other languages made completely trivial.

Yes, in many languages you can combine a few things plus a core dump and figure leaks out too... but average people actually use MAT because it's largely transparent, and it can operate on running processes. Very few languages can compete with that in practice, much less with reasonable performance.

[spockz]

Is there a tool for the jvm that can track data locality? TFA mentions three for Linux binaries but that won’t do the mapping to Java source if we can combine them with `java -jar` at all.