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Specification and Management of QoS in Imprecise Real-Time Databases
Linköping University, The Institute of Technology. Linköping University, Department of Computer and Information Science, RTSLAB - Real-Time Systems Laboratory.
Linköping University, The Institute of Technology. Linköping University, Department of Computer and Information Science, RTSLAB - Real-Time Systems Laboratory.
Dept. of Computer Science University of Virginia.
2003 (English)In: International Database Engineering and Applications Symposium,2003, Los Alamitos, CA, USA: IEEE Computer Society , 2003, 192- p.Conference paper, Published paper (Refereed)
Abstract [en]

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. Since the workload of real-time databases RTDBs, providing real-time data services, cannot be precisely predicted, they can become overloaded and thereby cause temporal violations, resulting in a damage or even a catastrophe. Imprecise computation techniques address this problem and allow graceful degradation during overloads. In this paper, we present a framework consisting of a model for expressing QoS requirements in terms of data and transaction preciseness, 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 RTDBs, even for transient overloads and with inaccurate run-time estimates of the transactions. Further, performance experiments show that the proposed algorithms outperform a set of baseline algorithms, including FCS-EDF that schedules the transactions using EDF and feedback control.

Place, publisher, year, edition, pages
Los Alamitos, CA, USA: IEEE Computer Society , 2003. 192- p.
Keyword [en]
real-time system, real-time database, QoS, feedback control, realtidssystem, realtidsdatabaser, reglerteknik, _CUGS
National Category
Computer Science
Identifiers
URN: urn:nbn:se:liu:diva-22228Local ID: 1387OAI: oai:DiVA.org:liu-22228DiVA: diva2:242541
Available from: 2009-10-07 Created: 2009-10-07

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http://www.ida.liu.se/~rtslab/publications/2003/Amirijoo03Specification.pdf

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Amirijoo, MehdiHansson, Jörgen

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf