Measurement and analysis of large operating systems during system development

Abstract

Some months ago, representatives of one of the better known software houses contacted us with this proposal: They wished to sell us a tool for advancing, our techniques in developing real-time systems. Their techniques allowed the exact reproduction of any observed sequence of real-time events. Thus, when a particular sequence caused a system error, the sequence could easily be reproduced so that the error could be analyzed and corrected, and the correction verified. A powerful tool, indeed.