IEFUSI

This is the SMF Step Initiation Exit and it must be enabled for the desired address space types 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:

Create or update a 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        */

To make the changes effective, issue the 'SET SMF=xx' console command.

When you set up SMFPRMxx correctly, the Application Performance Analyzer-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  Module CAZ00990 added to exit SYSTSO.IEFUSI

To reload the exit after you apply any maintenance or install a new release of Application Performance Analyzer, complete one of the following actions:

IPL the system and start the Application Performance Analyzer-started tasks.
Ensure that all Application Performance Analyzer-started tasks on your system are stopped, and then restart these tasks.

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