Using duration feedback options
HCL Workload Automation for Z automatically monitors the actual duration of operations. It can use these durations to modify the estimates in the application description database.
For example, if a job processes a data set that is getting bigger, the job is likely to take longer each time it runs. Using the feedback option helps to ensure that the job is started soon enough to process any new records and to still meet its deadline.
Two parameters, the smoothing factor and the limit for feedback, control how measured durations are used. Any value you specify here overrides the installation default specified in the JTOPTS statement.
- For shadow jobs, the smoothing factor and limit for feedback are ignored.
- If you have set FIRSTFDBK(YES) in the JTOPTS statement, every new job that you define is updated with the actual duration at its first run, even if you have set the smoothing factor to 0 or the limit for feedback to 100. Hence, if you want to keep a specific duration that you set in the database, review the duration value after the first run has occurred.
- The value used to select the operations for which a long duration alert must be issued, is set with the ALEACTION keyword of JTOPTS. If ALEACTION is not set, the LIMFDBK value is used instead. In this case, the value for the feedback limit that you can optionally enter in the application description is ignored.
- The feedback limit value applies also to the WLM policy DURATION.
Select option 5 in the OPERATION DETAILS panel. Specify the feedback options in the panel shown in EQQAMFBP - Feedback options to automatically adjust the estimated duration in the database after the job completes.
EQQAMFBP --------------------- FEEDBACK OPTIONS ------------------------------- Command ===> Enter/Change data below: Operation : CPU1 020 SMOOTHING FACTOR ===> 050 A value 0 to 999 where 0=no smoothing FEEDBACK LIMIT ===> 200 A value 100 to 999 where 100=no feedback