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QoSAware Resource Management for Distributed Multimedia Applications

Summary: QoS­Aware Resource Management for Distributed Multimedia
Klara Nahrstedt, Hao­hua Chu, Srinivas Narayan \Lambda
Department of Computer Science
University of Illinois at Urbana Champaign
The ability of operating system and network infrastructure to provide end­to­end quality of service
(QoS) guarantees in multimedia is a major acceptance factor for various distributed multimedia appli­
cations due to the temporal audio­visual and sensory information in these applications. Our constraints
on the end­to­end guarantees are (1) QoS should be achieved on a general­purpose platform with a
real­time extension support, and (2) QoS should be application­controllable.
In order to achieve the users' acceptance requirements and to satisfy our constraints on the multime­
dia systems, we need a QoS­compliant resource management which supports QoS negotiation, admission
and reservation mechanisms in an integrated and accessible way. In this paper we present a new resource
model and a time­variant QoS management, which are the major components of the QoS­compliant re­
source management. The resource model incorporates, the resource scheduler, and a new component,
the resource broker, which provides negotiation, admission and reservation capabilities for sharing re­
sources such as CPU, network or memory corresponding to requested QoS. The resource brokers are
intermediary resource managers; when combined with the resource schedulers, they provide a more pre­


Source: Adve, Sarita - Department of Computer Science, University of Illinois at Urbana-Champaign


Collections: Computer Technologies and Information Sciences