A software trace facility for OS/MVT

Abstract

This paper describes a software trace facility (STF) developed to provide data about the flow of control between modules of the IBM System/360 operating system OS/MVT. The motivation for STF is discussed and a brief Introduction to OS/MVT presented to show how STF interfaces with the operating system.The output of the program is illustrated and some details of the program logic are discussed together with the tracing options available to the user. The paper then describes some potential applications.