Data Centers

The Nature of Datacenter Traffic: Measurements & Analysis

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Executive Summary

In spite of widespread interest in datacenter networks, little has been published that reveals the nature of their traffic, or the problems that arise in practice. This paper is a first attempt to capture both the macroscopic patterns - which servers talk to which others, when and for what reasons - as well as the microscopic characteristics - flow durations, inter-arrival times, and like statistics - that should provide a useful guide for datacenter network designers. These statistics appear more regular and better behaved than counter parts from ISP networks (e.g., "Elephant" flows only last about one second).

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