java - Can I generate an HPROF file at will?

Question

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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?

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1 Answer

深蓝 · Answer 1 · 2021-10-23T18:30:35+0000

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>