To do this, use the Completed Concurrent Requests Report in the System Administrator's report security group. This report lists the actual start date and time and actual completion date and time for concurrent programs that completed running. See: Completed Concurrent Requests Report.
Suggestion: Run your concurrent programs at different times, perhaps, late at night and then again during the midafternoon, to determine processing time during different workload periods.
For example, based on actual time-to-completion, you can specialize different managers to run the following types of programs:
Further augment this approach with an "exception" manager defined for must have requests. For example, a manager that can run:
Defining Managers and their Work Shifts
Work Shift Definitions
Using Work Shifts to Balance Processing Workload
Work Shift by Manager Report
Work Shifts Report
Specializing Managers to run only certain programs
Grouping Programs by Request Type
Administer Concurrent Managers