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Proceedings Paper

Rate-matching packet scheduler for real-rate applications
Author(s): Kang Li; Jonathan Walpole; Dylan McNamee; Calton Pu; David C. Steere
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Paper Abstract

A packet scheduler is an operating system component that controls the allocation of network interface bandwidth to outgoing network flows. By deciding which packet to send next, packet schedulers not only determine how bandwidth is shared among flows, but also play a key role in determining the rate and timing behavior of individual flows. The recent explosion of rate and timing-sensitive flows, particularly in the context of multimedia applications, has focused new interest on packet schedulers. Next generation packet schedulers must not only ensure separation among flows and meet real-time performance constraints, they must also support dynamic fine- grain real-location of bandwidth for flows with variable-bit- rate requirements. Unfortunately, today's packet schedulers either do not support rate and timing sensitive flows, or do so with reservation systems that are relatively coarse-grain and inflexible. This paper makes two contributions. First it shows how bandwidth requirements can be inferred directly from real-rate flows, without requiring explicit specifications from the application. Second, it presents the design, implementation and performance evaluation of a rate-matching packet scheduler that uses these inferred requirements to automatically and dynamically control the bandwidth allocation to flows.

Paper Details

Date Published: 22 December 2000
PDF: 13 pages
Proc. SPIE 4312, Multimedia Computing and Networking 2001, (22 December 2000); doi: 10.1117/12.410913
Show Author Affiliations
Kang Li, Oregon Graduate Institute of Science and Technology (United States)
Jonathan Walpole, Oregon Graduate Institute of Science and Technology (United States)
Dylan McNamee, Oregon Graduate Institute of Science and Technology (United States)
Calton Pu, Oregon Graduate Institute of Science and Technology (United States)
David C. Steere, Oregon Graduate Institute of Science and Technology (United States)


Published in SPIE Proceedings Vol. 4312:
Multimedia Computing and Networking 2001
Wu-chi Feng; Martin G. Kienzle, Editor(s)

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