Program-I/O report

The Program-I/O report tells how long IMS was inactive (no IMS code was being executed) because IMS was waiting for use of a resource or for completion of an event. This time is called IWAIT time and, for all practical purposes, can be considered the time IMS had to wait while an I/O operation took place.

One report is produced each time the DB Monitor is run, and the report describes IWAIT time by PCB and data set name.

All times in the Program-I/O report are in microseconds. A microsecond is one millionth of a second (in other words, 7050 microseconds equals 0.007050 seconds).