Viewing JVM parameters

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VM Parameters

• -XX:+PrintCommandLineFlags: You can print out the display and implicit parameters passed to the virtual machine , Implicit parameters are not necessarily given directly from the command line , It may be set by the virtual machine itself when it starts .
• -XX:+PrintVMOptions: Print the display parameters received by the virtual machine command line

jdk Supplied command line parameters

• jps -v: View the parameters explicitly specified when the virtual machine starts ;
• jinfo -flags pid: View virtual machine explicit and implicit parameters

View heap summary

• jmap -heap pid