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zBNA V2.0 Enhancements

In July, the Washington Systems Center team released a significant update to zBNA, Version 2.0, introducing exciting new functions.

Abstract background with data mining and analytic symbols.

Initially released in 2013, IBM Z Batch Network Analyzer (zBNA) continues to add applications like QSAM/BSAM zEDC Estimation, DFSMS Data Set Encryption Estimation and zHyperLink analysis, that help clients optimize their batch windows by leveraging the latest IBM Z features. In July, the Washington Systems Center team released a significant update to zBNA, Version 2.0, introducing exciting new functions that include:
  • A new UI design that allows users to easily find and directly access the applications that they want to use.
  • The ability to import and export zBNA filters that are used in each application for later use and/or to share with others.
  • Top Program analysis to help users identify which programs are utilizing the most CPU time during their batch window. zBNA performs a Life of a Program analysis that shows every job step in the analysis that uses a specific program.
  • An encryption analysis enhancement to view CPU time, MIPS and MSU saving projections when compressing QSAM/BSAM zEDC eligible data sets before encrypting them with DFSMS Encryption.  

UI Enhancements

Figure 1 shows the new main window in zBNA 2.0. This new interface allows users to select the type of analysis they want to perform. The selectable icons depend on the SMF data provided in the .dat file loaded by the user. For example, the BSAM/QSAM zEDC icon is not selectable if SMF 14/15 records are not present in the .dat file.

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Figure 1. The new main window in zBNA V2.0

In addition, users can easily set the zBNA’s Global Time filter by clicking on the “Global Filters” Icon and then using the dialog window shown in Figure 2. Finally, all zBNA application windows have been updated to have a consistent design that uses filters, graph options and table panels with uniform colors to make navigation easier.
 
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Figure 2. The new Global Filters window

Importing and Exporting Filters

In previous versions of zBNA, users could save filters for the main batch jobs window, but not for any of the other application. zBNA 2.0 allows users to save filters on an individual application basis or all opened applications during a user’s session. Filters can be exported to a file that allows the user to import the file and continue from a previous session or share the file with colleagues and/or subject matter experts for further review. Figure 3 illustrates the dialog window shown to users when importing a filter file.

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Figure 3. The dialog window when importing saved zBNA filters from a file.

Top Program Analysis

Top Program analysis allows users to quickly identify which programs are utilizing the most CPU time during their batch window. CPU intensive programs are potential candidates for IBM Automatic Binary Optimizer (ABO), recompiling at the most recent software levels, or additional tuning to improve efficiency during the batch window.

For each program, the number of job steps returning a condition code that indicate an abend and how much CPU time those steps consumed are displayed in the table. The ability to focus on constant programs that are causing re-runs allows users to identify opportunities to save CPU by working to correct problem programs. Figure 4 shows the Top Program window.

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Figure 4. The Top Program’s window

Compression, Then Encryption

A key feature added to zBNA is the ability to perform a QSAM/BSAM zEDC Compression with Data Set Encryption analysis in one window. This powerful new feature enables users to view CPU time, MIPS and MSU saving projections when compressing QSAM/BSAM zEDC eligible data sets before DFSMS Encryption. The projected CPU savings, especially on the z14 and z14 (Model ZR1), when compressing QSAM/BSAM zEDC eligible data sets before encryption can be significant. This demonstrates the value of leveraging the most current IBM Z technologies. Figure 5 shows a graph produced by zBNA highlighting significant MIPS savings that are estimated when eligible data sets are compressed before encryption.

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Figure 5. zBNA graph showing reduction in cost when compressing zEDC eligible data sets before encrypting.

Continuous Improvement

zBNA continues to add new functions to help IBM Z clients identify batch resource consumption and evaluate how new IBM Z technologies help optimize their batch window. The zBNA V2.0 update provides significant usability enhancements to help users complete the analysis they need and easily share their studies. 

More Information

  • For more about the minimum PC requirements, to obtain the User’s Guide, and to download zBNA, see the IBM Technical Support Library website. The website provides hands-on labs with sample data for users to download and learn how to use zBNA’s functions.
  • For more information, to provide feedback or to report an issue with zBNA, email the Washington Systems Center team at zpcr@us.ibm.com.
  • For more information about z/OS Data Set Encryption, see the pervasive encryption for IBM Z content solution.

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