Tool or tricks to analyze offline Java heap dumps (.hprof)

Question

Are there any tools that allow offline analysis (including summary/sorting/sifting) of an .hprof file? Or can you run VisualVM, hat etc in batch mode?

I'm interested in something that can take an input .hprof file, crunch it and generate reports.

I assume you would need to pass in a bunch of options to configure the report, so if you know any helpful tips, please weigh in.

Preferably scriptable so I could run a bunch at once.

Answer 1

Eclipse Memory Analyzer does everything you need.

Answer 2

You can use jhat to parse/navigate the memory dump of an .hprof file.

$ jhat heapdump.hprof
Reading from heapdump.hprof...

Started HTTP server on port 7000
Server is ready.

The tool comes with the JDK.

Answer 3

Can you use jmap -histo ? What sort of report are you looking to extract?

Answer 4

hard to beat yourkit java profiler. It costs money, but it is worth every penny.

Answer 5

Es MAT (http://www.eclipse.org/mat/) is the way to go. Check http://kohlerm.blogspot.com/search/label/memory, especially http://kohlerm.blogspot.com/2009/07/eclipse-memory-analyzer-10-useful.html

Answer 6

JDK6 comes with jhat which parses and creates an html report.

http://docs.oracle.com/javase/6/docs/technotes/tools/share/jhat.html