Accumulating Statistics: Statistics Facility

As part of the post-processing for each job, Control-M determines the elapsed run time of the job. All accumulated information regarding job execution, including the elapsed run time, is written to the IOA Log file.     

Periodically, a statistics utility may be used to scan and analyze the IOA Log file. This utility gathers information about the start time of each job, its elapsed run time, CPU utilization time, and so on. The utility places this information in the Statistics file, where averages of these values can be maintained for each job.

Statistics facility averages may be used for several purposes:

• to determine if the execution time of a job falls outside of a statistically normal range of time, which would indicate an execution delay or problem)
• to calculate DUE-IN time for use by the Deadline Scheduling facility, which is discussed under Automatic Job Flow Adjustment
• to determine when a shout message must be issued based on the elapsed time of the job
• to simulate job executions and forecast the impact of changes to the system (described briefly below)
• to determine if a job can complete execution before the Control-M planned shutdown time (QUIESCE command)