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Scaling for E-Business by Virgilio A. F. Almeida, Daniel A. Menascé

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9.3. First Cut: the Single Queue Approach

What is the best model to represent the system of the simple example? This is a common question that arises when one faces real problems. Figure 9.2 illustrates this typical performance modeling question. Performance models can be developed at different levels of detail. The level of detail of a given model depends on what questions one wants to answer with the model. As a first cut, we look at performance models from a system-level point of view as opposed to a component-level point of view. A system-level performance model views the system being modeled as a "black box." In this case, the internal details of the box are not modeled explicitly. Only the throughput function of the box is considered. The ...

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