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The Computer Journal 1980 23(1):34-36; doi:10.1093/comjnl/23.1.34
© 1980 by British Computer Society
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A regression model for predicting the response time of a disc I/O system*

H. G. Perros §

Dept. of Quantitative Methods, University of Illinois at Chicago Circle, Chicago, Illinois, USA

In a disc I/O system, the execution time of a read or write request depends partially upon other requests being executed at the same time. This concept is developed in this paper, and it is then used together with some standard results from queueing theory to produce a simple nonlinear regression model for predicting the response time of a disc I/O system. The model is of wide applicability although it was developed originally for a specific system.

Received March 1979.

* This research was partially supported by a grant from the Research Board, University of Illinois at Chicago Circle.

§ Dept. of Quantitative Methods, University of Illinois at Chicago Circle, Chicago, Illinois, USA


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