Optimizing how the risk level of critical jobs is determined

For each critical job, you are now provided with a percentage indicating the confidence that the critical job meets its deadline. The confidence factor is calculated as the normal cumulative density function: it is the probability that the job will end within its deadline, calculated with a Gaussian function where the estimated end time is the mean, and the estimated end variance is the standard deviation. For more detailed information about how to set a job as a critical path target, see IBM Z Workload Scheduler: Managing the Workload.

The RISKCONFIDENCE parameter has been added to the JTOPTS initialization statement to influence the trigger that sets the high risk level for a critical job. When the confidence value of a critical job is lower than the RISKCONFIDENCE value, the Critical Path Handler task sets the critical job to a high risk level and notifies it to the controller EQQMLOG. When the RISKCONFIDENCE parameter is not specified, the Critical Path Handler task sets the critical job to a high risk level when its estimated end time becomes later than the deadline. For detailed information about the JTOPTS statement, see IBM Z Workload Scheduler: Customization and Tuning.