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Title:"Agilos": A Middleware Control Architecture for Application -Aware Quality of Service Adaptations
Author(s):Li, Baochun
Doctoral Committee Chair(s):Nahrstedt, Klara
Department / Program:Computer Science
Discipline:Computer Science
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Computer Science
Abstract:Third, in order to optimally design the reconfiguration rules in configurators so that the best possible application QoS is achieved, we designed mechanisms and protocols for the Quality of Service probing and profiling services, named QualProbes, for the discovery of relationships among QoS parameters and reconfiguration actions. Fourth, estimation errors and significant end-to-end delay may obstruct desired accurate adaptation measures. We devised an optimal state prediction approach to estimate current states based on available state observations. Finally, we present a gateway-centric approach that facilitates on-the-fly reconfiguration of client-server mappings. We have built a prototype of the Agilos architecture, and validated it with OmniTrack, a client-server based omni-directional visual tracking system. In this work, we show that the Agilos architecture effectively achieves the best possible performance with respect to the most critical QoS parameter, the tracking precision, while the adaptive actions are stable, flexible and configurable according to the needs of individual applications.
Issue Date:2000
Type:Text
Language:English
Description:173 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000.
URI:http://hdl.handle.net/2142/81979
Other Identifier(s):(MiAaPQ)AAI9971118
Date Available in IDEALS:2015-09-25
Date Deposited:2000


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