====== Analyze Java Virtual Machine ======

===== Thread Dump =====

  kill -3 <pid>

Creates a thread dump on linux.

  jstack -l <pid>

also creates a thread dump on a running VM (and leaves it running).


===== Heap Dump =====

  jmap -dump:format=b,file=dump.bin <pid>

Creates a dump to the file //dump.bin// of the passed process. The file is not human readable. Tools like [[https://eclipse.org/mat/ | MAT]] can help you analyze the dump.

{{tag>java}}