Empirical evaluation of OS endsystem support for real-time CORBA objectrequest brokers,

摘要

Abstract: This paper provides two contributions to the study of OS endsystem support for real-time Object Request Broker (ORB) middleware. First, we empirically compare and evaluate the suitability of real-time operating systems, VxWorks and LynxOS, and general-purpose operating systems with real-time scheduling classes, Windows NT, Solaris, and Linus, for real-time ORB middleware. While holding the hardware and ORB constant, we systematically vary the OS and measure key platform-specific variations in latency, jitter, operation throughput, and CPU processing overhead. Second, we describe specific areas where these operating systems must improve so that ORB middleware will be predictable, efficient, and scalable enough to support the QoS requirements of multimedia applications.!38