Performance modelling of OrbixTalk: a message delivery system based on reliable multicast protocols

Abstract

This paper presents a pool of performance models for user applications using IONA's OrbixTalk, a software system that provides a reliable multicast objects message system using UDP-based IP multicast. The solution presents models for all the levels involved, from the OrbixTalk user program level to the logical level regarding internal proxies using UDP sockets over TCP/IP ports. The OrbixTalk models have been included into the Models' Repository of HELIOS (Hierarchical Evaluation of Large Information Open Systems), a CASE tool for predicting the performance of distributed information systems.