A probabilistic model for performance analysis of cloud infrastructures

摘要

Analyzing the quantitative performance plays an important role in understanding and improving the qualityrnof cloud computing systems and cloud-based applications. In cloud computing, service requests from usersrngo through numerous provider-specific steps from the instant it is submitted to when the requested servicernis fully delivered. Quantitative performance analysis is not an easy task because of the complexity of cloudrnprovisioning control flows and the increasing scale and complexity of real-world cloud infrastructures. Thisrnwork proposes a probabilistic queuing network-based model for the performance analysis of cloud infrastructures.rnIt considers expected task completion time and rejection probability as the performance metrics.rnExperimental performance data suggest the correctness of the proposed model.