2151	 User Program Measurement in a Time-Shared Environment	 A general discussion of the measurement of software systems is followed by a description of a hardware and software scheme for measuring user programs in a time-shared environment. The TX- computer at MIT Lincoln Laboratory was used for the implementation of such a system and the characteristics of this implementation are reported. A scenario showing the system in use is presented. Finally it is shown how other time-sharing systems may provide similar measuring facilities. operating systems multiprogramming systems time-sharing systems software measurement user program measurement measurement technology TX- computer virtual computers performance improvement
