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Optimal Server Resource Allocation Using an Open Queueing Network Model of Response Time

Zhang, Alex; Santos, Pano; Beyer, Dirk; Tang, Hsiu- Khuern

HPL-2002-301

Keyword(s): service level agreement; web performance tuning; software performance modeling; response time; queueing; optimization

Abstract: We present a nonlinear integer optimization model for determining the number of machines at each tier in a multi-tier server network. We utilize a result from an open queueing network model on the average response time; the optimization model is to minimize a weighted sum of total machines while satisfying the average response time constraint (or a service level expression that is convertible to the average response time). We then discuss the solution to this optimization model and present an algorithm that utilizes a bounding procedure. Notes:

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