Accurate Measurements are Difficult End host measurements are not continuous, and affected by confounding factors Home Network: AT&T DSL 6 Mbps Down, 512 Kbps Up Last Mile ISP Network speedtest.net: 4.4 Mbps, 140 Kbps Netalyzr: 4.8 Mbps, 430 Kbps Broadband Internet Performance: A View from the Gateway ACM SIGCOMM, Toronto., August 2011 3
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