Elasticity Evaluation of IaaS Cloud Based on Mixed Workloads

Elasticity mechanism is the important feature of infrastructure clouds, which can add or remove resources to adapt the workload change. The elasticity mechanism impacts the quality of service and service level agreement. However, the performance of elasticity is hard to quantity. There are no efficient benchmarks to evaluate the elasticity mechanism. Exiting methods haven't considerate the different evaluation metrics and mixed workloads. In this paper, we propose a new framework to evaluate the elasticity of IaaS cloud based on mixed workload. Firstly, we design different types and patterns workload for the infrastructure cloud. Then, we propose the aggregated metrics which are based on different aspects. Finally, we present the experiments of real-world demonstrating that our method is applicable on the commercial IaaS cloud and has efficient results of elasticity evaluation.

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