Reliability/Performance Evaluation for Multisystems from the Viewpoint of Job Assignments

Hideshi OHSHIMO  Satoshi FUKUMOTO  Shunji OSAKI  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.8   pp.1257-1263
Publication Date: 1990/08/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on Fault-Tolerant Systems)

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A computing system, which plays an important role in our society, should be operated with high reliability and performance. A multisystem is one of the typical fault-tolerant computing systems, and is widely used in our society because of its high reliability and performance. In this paper we discuss a multisystem composed of two processors and buffer(s), and evaluate the system taking account of the reliability, performance and computational demands simultaneously. We propose two models for the system from the viewpoint of job assignment. Applying Markov renewal and queuing theories, we obtain the reliability/performance measures for each model. Using the numerical results of our models, we compare two models and show the impact of job assignment on the evaluation measures based on our numerical examples.