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Next: Introduction

Constant Bandwidth vs Proportional Share Resource Allocation

Luca Abeni, Giuseppe Lipari and Giorgio Buttazzo
Scuola Superiore S. Anna, Pisa, {lipari,giorgio}


Due to the success of new multimedia technologies, there is a great interest for providing operating system support to multimedia applications. In particular, the problem of resource allocation has been widely addressed in the last years. Many solutions proposed in literature are based on proportional share resource allocation, such as WFQ, WF2Q, EEVDF, or SFQ. In a previous paper, we showed how to use the real-time theory to perform resource reservation according to a Constant Bandwidth allocation. In this paper we compare Proportional Share and Constant Bandwidth resource allocation strategies, by showing advantages and drawbacks of both techniques.