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    On rate limitation mechanisms for TCP throughput: a longitudinal analysis 
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    On rate limitation mechanisms for TCP throughput: a longitudinal analysis

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    Accepted version (614.0Kb)
    Journal
    Computer Networks
    ISSN
    1872-7069
    Metadata
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    Abstract
    TCP remains the dominant transport protocol for Internet traffic. It is usually considered to have its sending rate covered by a sliding window congestion control mechanism. However, in addition to this normal congestion control, a number of other mechanisms limit TCP throughput. This paper analyzes the extent to which network, host and application settings define flow throughput over time and across autonomous systems. Our study draws on data from a longitudinal study spanning five years of passive traces collected from a single transit link. Mechanisms for this include limiting by application, interference with the TCP window control mechanism and artificial limitations on maximum window sizes by the operating system. This paper uses a large data set to assess the impact of each mechanism. We conclude that more than half of all heavy-hitter inbound traffic remains throttled by constraints beyond network capacity. For this data set, TCP congestion control is no longer the dominant mechanism that moderates throughput.
    Authors
    Landa, R; Araujo, JT; CLEGG, R; Pavlou, G; Fukuda, K
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/18334
    Collections
    • Networks Group [71]
    Copyright statements
    http://dx.doi.org/10.1016/j.comnet.2016.12.003
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