A 3-VIEW MODEL FOR PERFORMANCE ENGINEERING OF CONCURRENT SOFTWARE

This paper describes a multiview characterization of concurrent softwa re and systems suitable for displaying and analyzing performance infor mation. The views draw from well-known descriptions, and are compatibl e with established techniques and tools such as execution graphs, Petr i Nets, State-Charts, structured design or object-oriented design, and various models for performance. The views are connected by means of a ''Core model'' and are used together to extract information relating to system integration, such as interprocess overheads, and the delay b ehavior of separate software components in complex systems. The integr ation of the views in the Core assists by converting results in one vi ew (such as scheduling delay for resources) to parameters in another ( such as delays along a path), The ultimate goal of the views is to sup port designers in making tradeoffs which involve performance, and to p rovide early assessment of the performance potential of software desig ns.