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ACS/IEEE International Conference on Computer Systems and Applications (AICCSA'01)   p. 0260
Perceived Consistency
Carsten Griwodz, University of Oslo
Michael Liepert, Darmstadt University of Technology
Abdulmotaleb El Saddik, Darmstadt University of Technology
Giwon On, Darmstadt University of Technology
Michael Zink, Darmstadt University of Technology
Ralf Steinmetz, Darmstadt University of Technology

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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/AICCSA.2001.933986
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Abstract
Abstract: Quality of service guarantees for multimedia communication systems have been considered on several abstraction levels. In the multimedia networking field it is typical to identify the minimal QoS requirements of an application to save resources by guaranteeing its functionality. Many of these applications can operate in spite of an imperfect delivery of media data, while other applications such as distributed databases or distributed filesystems consider perfect QoS necessary but accept delay. The basic problems of the latter is the consistency of their data, while the former require a consistent perception of the content. More generically, both QoS requirements can be interpreted as a problem of maintaining a consistent system state. Consequently we assume that many distributed applications, including most distributed multimedia applications, can fulfil their tasks in spite of imperfect consistency. Since the application requirements differ widely, the elements that make up "consistency" must be separated and classified. This paper introduces Consistency QoS and proposes a classification of elements that determine an application's consistency requirements. The low level QoS requirements that these separate parameters rely on are shown, and example parameter sets for application classes are given.
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Citation:  Carsten Griwodz, Michael Liepert, Abdulmotaleb El Saddik, Giwon On, Michael Zink, Ralf Steinmetz, "Perceived Consistency," aiccsa, p. 0260,  ACS/IEEE International Conference on Computer Systems and Applications (AICCSA'01),  2001