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System Support for the Integrated Management of Quality of Service

March 4, 2004

Date: Thursday, March 4th, 2004
Time: 11am-12:15pm
Location: Woodward 149

Christian Poellabauer, <>
Department of Computer Science, Georgia Institute of Technology

Abstract: The increasing number of network-enabled systems and the growing complexity of distributed applications pose numerous challenges for the management and provision of Quality of Service (QoS). Particularly in resource-scarce environments, such as mobile wireless systems, adaptation of applications and system-level resource management are used to provide users with the performance and qualities they need. The distributed management of Quality of Service has been the focus of intensive research efforts and has led to a multitude of techniques at the hardware, network, system, or application layer. However, if multiple such techniques are deployed in a system, an integrated approach to QoS management has to be chosen, to ensure optimal results and to prevent adverse effects resulting from competing techniques. In this talk, I will address how the adaptation of applications and the management of multiple system constraints can be coordinated to efficiently provide users with the QoS they need. This coordination is supported by Q-Fabric, a collection of operating system extensions, which provide the framework to deploy feedback-based integrated QoS management for distributed applications. Specifically, my talk will focus on the integrated approach to distributed energy management for mobile multimedia applications. The goal is to efficiently deploy and coordinate novel energy management techniques at different layers of a system, while carefully balancing the user-perceived QoS with the system's energy consumption. SHORT BIO: Christian Poellabauer is a Ph.D. candidate in Computer Science at the Georgia Institute of Technology, expecting to graduate in May 2004. He received his Master's degree in Computer Science from the Vienna University of Technology. His research interests are in the area of experimental systems, including real-time systems, operating systems, pervasive computing, and mobile systems. He is a recipient of an IBM Ph.D. Research Fellowship.