JVM

The JVM page displays statistics about Java Virtual Machine (JVM) activity.

Contents:

JVM

The JVM page displays statistics about Java Virtual Machine (JVM) activity.

The display options available on the JVM page are as follows:

  • Process (initial display)
    Displays the processes used by the monitored application.

Commands available in this view include:

  • Switch to PROCESS mode
    Switches the page to the Process display option.

  • Switch to APPLICATION mode
    Switches the page to the Application display option.

  • Switch to CURRENT mode
    Switches the page to the Current display option.

  • Switch to VIA mode
    Switches the page to the Via display option.

  • Application Methods
    Displays the JVM Methods subpage showing application methods for the selected process.

  • Via Methods
    Displays the JVM Methods subpage showing via methods (called by the application) for the selected process.

  • Current Methods
    Displays the JVM Methods subpage showing current (last-called) class methods for the selected process.

  • Threads
    Displays the JVM Thread TCBs subpage showing threads for the selected process.

  • Method Details
    Displays the JVM Method Details subpage showing line numbers in the selected method where activity was measured.

  • Processes
    Displays the JVM Processes subpage showing processes where activity was measured for a selected method.

JVM Columns

  • Process ID
    The identification numbers or the processes monitored using a Java Virtual Machine.

  • JVM Release
    The release level of the Java Virtual Machine. (obtained from java.vm.version)

  • Pct %
    The percentage of all JVM activity measured where CA MAT detected program code to be executing.
    This value is calculated based on the total of JVM activity, not the total number of CA MAT samples.

  • JVM Information
    The Java Virtual Machine System Properties (obtained from java.vm.info)

JVM Thread TCBs

  • Thread TCB
    The Thread identification value (or TCB address).

  • UNIX Thread ID
    The UNIX Thread associated with the Thread TCB.

  • Pct %
    The percentage of all JVM activity measured where CA MAT detected program code to be executing.
    This value is calculated based on the total of JVM activity, not the total number of CA MAT samples.