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Journals ACM SIGMETRICS Performance Evaluation Review Volume 21 Issue 2

Queueing networks and Markov processes etc. are widely used in modeling computer systems and communication networks to study their performance and reliability. To solve a real world problem, the model developed has to be validated through measured data. In this paper, we point out that in validating a model, one has to be very clear about one's claims regarding what has been validated; Too "accurate" results do not imply a correct model and usually indicates a validation problem. We discuss some common misconceptions in performance modeling and validation. We illustrate our points through examples. To capture the main concepts, the problems are simplified in these examples.

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Some common misconceptions about performance modeling and validation

Cao, Xiren
ACM SIGMETRICS Performance Evaluation Review , Volume 21 (2)
Association for Computing Machinery – Dec 1, 1993

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