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Lookup NU author(s): Visalakshmi Suresh,
Dr Paul EzhilchelvanORCiD,
Professor Paul WatsonORCiD
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Event processing involves continuous evaluation of queries over streams of events. Response-time optimization is traditionally done over a fixed set of nodes and/or by using metrics measured at query-operator levels. Cloud computing makes it easy to acquire and release computing nodes as required. Leveraging this flexibility, we propose a novel, queueing-theory-based approach for meeting specified response-time targets against fluctuating event arrival rates by drawing only the necessary amount of computing resources from a cloud platform. In the proposed approach, the entire processing engine of a distinct query is modelled as an atomic unit for predicting response times. Several such units hosted on a single node are modelled as a multiple class M/G/1 system. These aspects eliminate intrusive, low-level performance measurements at run-time, and also offer portability and scalability. Using model-based predictions, cloud resources are efficiently used to meet response-time targets. The efficacy of the approach is demonstrated through cloud-based experiments.
Author(s): Suresh V, Ezhilchelvan P, Watson P
Publication type: Article
Publication status: Published
Journal: Philosophical Transactions of the Royal Society A. Mathematical, Physical & Engineering Sciences
Print publication date: 10/12/2012
ISSN (print): 1364-503X
ISSN (electronic): 1471-2962
Publisher: The Royal Society
Notes: Article is 13 pp.
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