A simulation study of cost of delays in computer systems

摘要

The purpose of this paper is t o demonstrate the effectiveness of a partial cost analysis of computer system performance by simulation methods. The competing factors of cost of delay to Jobs and the mean system cost averaged over each job are considered in the analysis. Job characteristics are generated from a set of input means by Monte Carlo methods, and the processing of these jobs is simulated using a next-event type of model incorporating the scheduling logic and the gross hardware characteristics of the computer system.

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The results of such a partial cost analysis should be combined with other cost considerations to gain an overall cost picture. Rather than replacing accepted measures of system performance such as benchmark tests, the analysis may rely on these methods to provide some of the input information, such as the mean amount of central processor time requested. The characteristic feature of the type of analysis described here is the inclusion of the cost of delay to jobs asa relevant cost consideration.