TLDR Search

Enter a command. For example: django admin, virt install.

jmap

Java Memory Map Tool. More information: https://docs.oracle.com/javase/7/docs/technotes/tools/share/jmap.html.

• Print shared object mappings for a Java process (output like pmap):
   
  jmap {{java_pid}}
   
• Print heap summary information:
   
  jmap -heap {{filename.jar}} {{java_pid}}
   
• Print histogram of heap usage by type:
   
  jmap -histo {{java_pid}}
   
• Dump contents of the heap into a binary file for analysis with jhat:
   
  jmap -dump:format=b,file={{filename}} {{java_pid}}