Using system monitor output to improve performance
A. J. Bonner · IBM Systems Journal · 1969
The items measured here are but a few of the possible uses of the system monitor. To date, concentration has been on items of interest to the user of the data processing system. Even here, the measurements taken have been those that concern overall system performance, Once these adjustments are made, attention will probably be turned to more detailed measurements, such as an interruption-handling routine, channel contention, a critical subroutine, and other small but, important aspects of the system. Also, the monitor may be used in the future to acquire data to assist the designers of new equipment, an area where monitors have proved useful in the past.