A hierarchical modeling of availability in distributed systems

Author

Hariri, Salim ; Mutlu, Hasan B.

Author_Institution

Syracuse Univ., NY, USA

fYear

1991

fDate

20-24 May 1991

Firstpage

190

Lastpage

197

Abstract

A two-level hierarchical model is proposed to analyze the availability of distributed systems as perceived by their users. At the higher level (user level), the availability of the tasks (processes) is analyzed in terms of the availability of the system components. At the lower level (component level), detailed Markov models are developed to analyze the component availabilities. These models take into account the hardware/software failures, congestion and collisions in communication links, allocation of resources, and the redundancy level. Also presented is the availability analysis of some of the services provided by the unified workstation environment (UWE) currently being implemented at AT&T Bell Laboratories

Keywords

Markov processes; distributed processing; AT&T Bell Laboratories; Markov models; UWE; availability; collisions; communication links; component level; congestion; distributed systems; hierarchical modeling; redundancy level; resource allocation; system components; two-level hierarchical model; unified workstation environment; user level; Availability; Design engineering; Distributed computing; Hardware; Laboratories; Process design; Reliability engineering; Resource management; Throughput; Workstations;

fLanguage

English

Publisher

ieee

Conference_Titel

Distributed Computing Systems, 1991., 11th International Conference on

Conference_Location

Arlington, TX

Print_ISBN

0-8186-2144-3

Type

conf

DOI

10.1109/ICDCS.1991.148664

Filename

148664