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Specification and M...
Specification and Management of QoS in Real-Time Databases Supporting Imprecise Computations
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- Amirijoo, Mehdi (author)
- Linköpings universitet,RTSLAB - Laboratoriet för realtidssystem,Tekniska högskolan
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- Hansson, Jörgen (author)
- Linköpings universitet,RTSLAB - Laboratoriet för realtidssystem,Tekniska högskolan
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- Son, Sang H. (author)
- Dept. of Computer Science, University of Virginia, Charlottesville, USA
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(creator_code:org_t)
- 2006
- 2006
- English.
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In: IEEE Transactions on Computers. - 0018-9340 .- 1557-9956. ; 55:3, s. 304-319
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http://www.cs.virgin...
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http://urn.kb.se/res...
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Abstract
Subject headings
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- Real-time applications such as e-commerce, flight control, chemical and nuclear control, and telecommunication are becoming increasingly sophisticated in their data needs, resulting in greater demands for real-time data services that are provided by real-time databases. Since the workload of real-time databases cannot be precisely predicted, they can become overloaded and thereby cause temporal violations, resulting in damage or even a catastrophe. Imprecise computation techniques address this problem and allow graceful degradation during overloads. In this paper, we present a framework for QoS specification and management consisting of a model for expressing QoS requirements, an architecture based on feedback control scheduling, and a set of algorithms implementing different policies and behaviors. Our approach gives a robust and controlled behavior of real-time databases, even for transient overloads and with inaccurate runtime estimates of the transactions. Further, performance experiments show that the proposed algorithms outperform a set of baseline algorithms that uses feedback control.
Keyword
- Real-time and embedded systems
- real-time data services
- imprecise computation
- feedback control
- modeling techniques
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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