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Shrinking MTU to Mitigate TCP Incast Throughput Collapse in Data Center Networks

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3 Author(s)
Peng Zhang ; State Key Lab. of Networking & Switching Technol., Beijing Univ. of Posts & Telecommun., Beijing, China ; Hongbo Wang ; Shiduan Cheng

More and more data centers are built using commodity TCP/IP and Ethernet networks because of their low cost and ease-of-use. But TCP would experience catastrophic throughput collapse in a communication pattern, termed "Incast", where multiple senders simultaneously send data to a receiver. This phenomenon potentially arises in many typical applications, such as distributed storage, Map Reduce and web search. However, solutions proposed by former research either are not easy to implement or high in cost. In this paper, we present a simple and cost-effective method - shrinking MTU - to mitigate TCP In cast throughput collapse. Through analysis and extensive simulations, decreasing MTU size can delay the onset of In cast.

Published in:

Communications and Mobile Computing (CMC), 2011 Third International Conference on

Date of Conference:

18-20 April 2011

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