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

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 wei开发者_开发知识库gh in.

Preferably scriptable so I could run a bunch at once.

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Eclipse Memory Analyzer does everything you need.

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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.

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

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

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Also, if you use IntelliJ IDEA, you can open *.hprof memory snapshots, too: Run | Open Profiler Snapshot | Open

Official documentation: https://www.jetbrains.com/help/idea/analyze-hprof-memory-snapshots.html

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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

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

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