Application Performance Analyzer for z/OS, Version 11.1, Customization Guide

Enabling the SMF step initiation exit (IEFUSI)

IEFUSI is a System Management Facilities (SMF) exit, and it must be enabled for the types of workloads on which Application Performance Analyzer will report. The IEFUSI exit point can be defined to SMF so that SMF will be called for the entire system, batch jobs, started tasks, and TSO logons. Enable IEFUSI by performing the following steps:

  1. Create or update an SMFPRMxx member in SYS1.PARMLIB (or any parmlib that will be used for IPL). Specify IEFUSI on the EXITS option of the SYS or SUBSYS parameters. For example:
          SYS(...,
          EXITS(IEFUSI,...)) /* enable IEFUSI for the entire system */
    
          SUBSYS(TSO,
          EXITS(IEFUSI,...)) /* enable IEFUSI for TSO workloads */ 
    
          SUBSYS(JES2,
          EXITS(IEFUSI,...)) /* enable IEFUSI for JES2 Batch workloads */ 
    
          SUBSYS(JES3,
          EXITS(IEFUSI,...)) /* enable IEFUSI for JES3 Batch workloads */ 
    
          SUBSYS(STC,
          EXITS(IEFUSI,...)) /* enable  IEFUSI for Started Tasks    */  
  2. To make the changes effective, issue the 'SET SMF=xx' console command.

The recommended size for data spaces in the IEFUSI exit is 3GB with 20 data spaces. Data space limitations can prevent Application Performance Analyzer from producing on-line reports or batch printed reports. These recommendations allow for very large sample files.

When you set up SMFPRMxx correctly, the CAZ0 started task will inform you of each exit point that Application Performance Analyzer is using. For example, if you set up SMFPRMxx to take SMF exit IEFUSI for TSO users, then you would see a message similar to the following for SYSTSO:

CAZ1221I CAZ0-MAIN (UTCPLXSB) Module CAZ00990 added to exit SYSTSO.IEFUSI.

Note:
Before applying any maintenance or installing a new release of Application Performance Analyzer, make sure that you stop the started task CAZ0.

After applying any maintenance or installing a new release of Application Performance Analyzer, do one of the following actions:

For more information about SMFPRMxx and its parameters, see z/OS® Initialization and Tuning Reference.




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