DEVELOPMENT OF A PROCESSOR MONITORING INSTRUMENT FOR SPC EXCHANGES: FACILITIES AND APPLICATION AREAS.

The Processor Monitoring Instrument (PMI) has been designed to monitor the activity of any processor employed in any Stored Program Controlled system in the Australian network, without requiring any changes in the normal operation of the system being monitored. More specifically, the PMI simultaneously displays and measures up to fourteen indicators of the processing load, including the Effective Processor Occupancy, a concept which is explained in this paper. It can be used efficiently to produce measurements for studies of processor capacity, and for more general traffic engineering studies. This article describes the facilities of the PMI and its potential range of applications to system testing, operation and traffic engineering.