Real-time dependable channels: customizing QoS attributes for distributed systems

Author

Hiltunen, Matti A. ; Schlichting, Richard D. ; Han, Xiaonan ; Cardozo, Melvin M. ; Das, Rajsekhar

Author_Institution

Dept. of Comput. Sci., Arizona Univ., Tucson, AZ, USA

Volume

10

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

600

Lastpage

612

Abstract

Communication services that provide enhanced Quality of Service (QoS) guarantees related to dependability and real time are important for many applications in distributed systems. This paper presents real-time dependable (RTD) channels, a communication-oriented abstraction that can be configured to meet the QoS requirements of a variety of distributed applications. This customization ability is based on using CactusRT, a system that supports the construction of middleware services out of software modules called micro-protocols. Each micro-protocol implements a different semantic property or property variant and interacts with other micro-protocols using an event-driven model supported by the CactusRT runtime system. In addition to RTD channels CactusRT and its implementation are described. This prototype executes on a cluster of Pentium PCs running the OpenGroup/RI MK 7.3 Mach real-time operating system and CORDS, a system for building network protocols based on the x-kernel

Keywords

client-server systems; quality of service; real-time systems; CORDS; CactusRT; QoS attributes; dependable channels; distributed systems; micro-protocols; middleware services; network protocols; real-time dependable channels; real-time operating system; Application software; Middleware; Modular construction; Operating systems; Personal communication networks; Protocols; Prototypes; Quality of service; Real time systems; Software prototyping;

fLanguage

English

Journal_Title

Parallel and Distributed Systems, IEEE Transactions on

Publisher

ieee

ISSN

1045-9219

Type

jour

DOI

10.1109/71.774909

Filename

774909