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Issue No.12 - Dec. (2013 vol.24)
pp: 2429-2438
Hamzeh Khazaei , University of Manitoba, Winnipeg
Jelena Misic , Ryerson University, Toronto
Vojislav B. Misic , Ryerson University, Toronto
In this paper, we evaluate the performance of cloud centers with high degree of virtualization and Poisson batch task arrivals. To this end, we develop an analytical model and validate it with an independent simulation model. Task service times are modeled with a general probability distribution, but the model also accounts for the deterioration of performance due to the workload at each node. The model allows for calculation of important performance indicators such as mean response time, waiting time in the queue, queue length, blocking probability, probability of immediate service, and probability distribution of the number of tasks in the system. Furthermore, we show that the performance of a cloud center may be improved if incoming requests are partitioned on the basis of the coefficient of variation of service time and batch size.
Time factors, Analytical models, Virtualization, Computational modeling, Cloud computing,stochastic process, Cloud computing, performance modeling, quality of service, response time, virtualized environment
Hamzeh Khazaei, Jelena Misic, Vojislav B. Misic, "Performance of Cloud Centers with High Degree of Virtualization under Batch Task Arrivals", IEEE Transactions on Parallel & Distributed Systems, vol.24, no. 12, pp. 2429-2438, Dec. 2013, doi:10.1109/TPDS.2012.318
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