How to analyse the heap dump using jmap in java

Question

I am creating heap dump using below command:

jmap -dump:file=DumpFile.txt 

I have opened the generated file - DumpF

Answer 1

You can use jhat (Java Heap Analysis Tool) to read the generated file:

jhat [ options ] <heap-dump-file>

The jhat command parses a java heap dump file and launches a webserver. jhat enables you to browse heap dumps using your favorite webbrowser.

Note that you should have a hprof binary format output to be able to parse it with jhat. You can use format=b option to generate the dump in this format.

-dump:format=b,file=<filename>