The Instrumentation of Multics An array of measuring tools devised to aid in the implementation of a prototype computer utility is discussed. These tools include special hardware clocks and data channels, general purpose programmed probing and recording tools, and specialized measurement facilities. Some particular measurements of interest in a system which combines demand paging with multiprogramming are described in detail. Where appropriate, insight into effectiveness (or lack there of) of individual tools is provided. CACM August, 1970 Gintell, J. W. Saltzer, J. H. instrumentation, performance measurement, multiprogramming systems, measuring tools, system analysis, Multics, metering, event tracing, demand paging, script driven measurement 2.44 4.32 4.39 4.42 CA700805 JB February 10, 1978 3:43 PM 2016 5 2016 2016 5 2016 2016 5 2016 2193 5 2016 2319 5 2016 2894 5 2016 1408 6 2016 1719 6 2016 1749 6 2016 1751 6 2016 1951 6 2016 2016 6 2016 2016 6 2016 2016 6 2016 2017 6 2016 2080 6 2016 2188 6 2016 2203 6 2016 2204 6 2016 3186 6 2016