Spy - A Program to Monitor OS/360
Robert Sedgewick, R. H. Van Stone, John W. McDonald · afips · 1899
It is generally agreed that one of the major problems facing the manufacturers of large scale computer systems today is the problem of measuring the performance of a computer in conjunction with the operating system which drives it. This problem is under consideration for operating systems currently in the design and implementation stages through studies on: (i) the establishment of reasonable criteria under which performance can be measured; (ii) means of actually making the measurements; and (iii) ways of using the information obtained to optimize the performance of the system under the established criteria for a particular user's environment.