Evaluating the scalability of distributed systems

Abstract
Many distributed systems must be scalable, meaning that they must be economically deployablein a wide range of sizes and con#gurations. This paper presents a scalability metric based on coste#ectiveness, where the e#ectiveness is a function of the system's throughput and its qualityofservice. It is part of a framework which also includes a scaling strategy for introducing changes as afunction of a scale factor, and an automated virtual design optimization at each scale factor. Thisis...

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