An operating system for an online transaction processing system with a heavy load

In this paper, we describe an operating system for terminal controller which controls communication lines and terminals in a large-scaled distributed transaction processing system. Since the controller deals with a lot of transaction requests from terminals concurrently, its operating system needs to manage resources efficiently in order to guarantee the maximum response time. Besides, system availability and efficiency for system maintenance are also required, therefore the operating system has to provide essential facilities. Our operating system has been developed to satisfy such requirements in a practical way. This paper introduces the major features, evaluation results, and states of the application.