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A Study on the Benefit of TCP Packet Prioritisation

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 belong 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 flows take benefit of such routing mechanism.
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https://hal.archives-ouvertes.fr/hal-00449764
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Submitted on : Friday, January 22, 2010 - 3:42:25 PM
Last modification on : Tuesday, October 19, 2021 - 11:16:22 PM
Long-term archiving on: : Thursday, October 18, 2012 - 1:06:12 PM

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  • HAL Id : hal-00449764, version 1

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Eugen Dedu, Emmanuel Lochin. A Study on the Benefit of TCP Packet Prioritisation. The 17th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP 2009), Feb 2009, Weimar, Germany. pp.0. ⟨hal-00449764⟩

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