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Using Strobe for Java

Use Strobe for Java to measure jobs that use Java applications. This topic provides information about submitting a Strobe measurement request to measure a job as it executes or to measure a job that has not yet executed.

Strobe for Java requirements

  • Strobe for CICS, to measure Java programs in a CICS environment
  • Strobe for IMS, to measure Java programs in an IMS environment

Java process ID data

Use the Strobe for Java option to collect the Java Process ID (PID) data and measure a Java application. Java PID data includes all states of thread activity for a given measurement session and the Java Virtual Machine (JVM) activity. Java PID profile data comprises of the following: 

Related topics

Strobe-for-Java-overview
Strobe for Java reports

 

To measure an active job

You can measure up to four JVMs from the same address space (ASID) simultaneously.

  • To measure Java PID data, provide a job name or JVM ID. Alternatively, you can request the measurement of Java PID data from the JVM list that displays all active JVMs running in your IBM z/OS environment.

  • Make sure that your JVM is configured with JMX properties that are required for measuring a job. For more information, see this knowledge article.

Perform the following steps to measure an active job:

  1. From the Strobe Options menu, select Option 1. The Strobe - Add Active Request panel is displayed.
    Add Panel 1.png
  2. To display a list of JVM jobs, clear the JOBNAME field, enter J, and press Enter:
    Step 2 - Filtered Job Selection.png
  3. Enter Y in Change Display Format, and press Enter. 
  4. To measure a Java application, select MJE JAVA. All jobs that use Java applications are displayed. 
    Display Format - step4.png
  5. Select the job that you want to measure and press Enter. The MJE JAVA column indicates if a job is using a Java application. 
    Job Selection - step5.png
  6. Configure a measurement session by entering the following details:Add Panel 2 - Step6.png

     

    Field

    Description

    Session Duration

    Enter the duration of time to measure the process. 

    TSO User ID To Notify 

    Enter a TSO user ID to notify when the measurement request is complete.

    Sample Dataset Information 

    Specify the sample data set information.

    Data Collectors

    Enter Y and press Enter.

  7. In the Strobe  - Data Collectors panel, enter Y in the MJE JAVA field and press Enter. 
    Measure_JVM_fig6.png
  8. Select the desired PID that you want to measure and press Enter to submit the measurement request. 
    JVM Selection - step 8.png

 

Warning

Important

  • If a job has a single PID, your request is submitted with a single PID without opening the above screen.
  • If you do not select any PID and press Enter, the first PID is selected by default, and is submitted for measuring. 

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BMC AMI Strobe 21.01