java - Can I generate an HPROF file at will?

Question

I have a java process which is acting dubiously. I'd like to see what's up using the various HPROF analysis tools.

How do I generate one on the fly?

Answer 1

Yes. You can generate an hprof file (containing heap memory usage) on the fly using the jmap tool, which ships with Sun's Java VM:

jmap -dump:file=<file_name> <pid>