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Scalable Stochastic Models for Cloud Services

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Date
2012
Author
Ghosh, Rahul
Advisor
Trivedi, Kishor S.
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Abstract

Cloud computing appears to be a paradigm shift in service oriented computing. Massively scalable Cloud architectures are spawned by new business and social applications as well as Internet driven economics. Besides being inherently large scale and highly distributed, Cloud systems are almost always virtualized and operate in automated shared environments. The deployed Cloud services are still in their infancy and a variety of research challenges need to be addressed to predict their long-term behavior. Performance and dependability of Cloud services are in general stochastic in nature and they are affected by a large number of factors, e.g., nature of workload and faultload, infrastructure characteristics and management policies. As a result, developing scalable and predictive analytics for Cloud becomes difficult and non-trivial. This dissertation presents the research framework needed to develop high fidelity stochastic models for large scale enterprise systems using Cloud computing as an example. Throughout the dissertation, we show how the developed models are used for: (i) performance and availability analysis, (ii) understanding of power-performance trade-offs, (ii) resiliency quantification, (iv) cost analysis and capacity planning, and (v) risk analysis of Cloud services. In general, the models and approaches presented in this thesis can be useful to a Cloud service provider for planning, forecasting, bottleneck detection, what-if analysis or overall optimization during design, development, testing and operational phases of a Cloud.

Type
Dissertation
Department
Electrical and Computer Engineering
Subject
Computer engineering
Computer science
Electrical engineering
Analytics
Cloud
Markov chains
Optimization
Performance modeling
Stochastic processes
Permalink
https://hdl.handle.net/10161/6110
Citation
Ghosh, Rahul (2012). Scalable Stochastic Models for Cloud Services. Dissertation, Duke University. Retrieved from https://hdl.handle.net/10161/6110.
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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

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