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A study on the benefit of TCP packet prioritisation

Dedu, Eugen and Lochin, Emmanuel A study on the benefit of TCP packet prioritisation. (2009) In: The 17th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP 2009), 18-20 Fev 2009, Weimar, Germany .

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Abstract

This paper studies and analyses the benefits of favouring the transfer of packets of a TCP flow over a best-effort network. Specifically, we aim at studying whether we could improve the pace of short data request, such as HTTP request, by giving a high priority to TCP packets that are not previously enqueued inside a core router. Following the idea that long-lived TCP flows greatly increase the routing queue delay, the motivation of this work is to minimise the impact in terms of delay, introduced by long-lived TCP flows over short TCP flows. Thus, this forwarding scheme avoids to delay packets that do not be- long to a flow already enqueued inside a router in order to avoid delay penalty to short flow. We define metrics to study the behaviour of such forwarding scheme and run several experiments over a complex and realistic topology. The results obtained present interesting and unexpected property of this forwarding scheme where not only short TCP o flows take benefit of such routing mechanism.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université de Franche-Comté (FRANCE)
Laboratory name:
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Deposited By: Emmanuel Lochin

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