jhat

Java heap analysis tool. More information: https://docs.oracle.com/javase/8/docs/technotes/tools/unix/jhat.html.

• Analyze a heap dump (from jmap), view via HTTP on port 7000:
  jhat {{dump_file.bin}}
• Analyze a heap dump, specifying an alternate port for the http server:
  jhat -p {{port}} {{dump_file.bin}}
• Analyze a dump letting jhat use up to 8 GB RAM (2-4x dump size recommended):
  jhat -J-mx8G {{dump_file.bin}}