Paper Info
Title
Where Is My Peer? Evaluation of the Vivaldi Network Coordinate System in Azureus
Abstract
Network coordinates allow to estimate the latency among a large number of hosts in a scalable way. Recently, Azureus, a popular implementation of BitTorrent, has implemented network coordinates. We have developed a crawler that allows us to obtain from the network coordinates over one hundred thousand peers running Azureus and to measure the network and application level round trip times to these peers. Our measurements confirm that network coordinates allow to correctly estimate the round trip time between two peers. Our measurements also show that the round trip times from our crawling host to a set of peers located in the same country can vary between a few tens of milliseconds to more than one second. This high variance is due to the large buffers in the ADSL access links, which can increase the round trip time by hundreds of milliseconds. As a consequence, network coordinates and round trip estimations in general cannot be used to select peers that are "nearby", such as peers connected to the same ISP or located in the same country.
Year
DOI
Venue
2009
10.1007/978-3-642-01399-7_12
Networking
Keywords
DocType
Citations 
vivaldi network coordinate system,crawling host,round trip estimation,large number,large buffer,popular implementation,high variance,adsl access link,round trip time,hundred thousand peer,application level round trip,bittorrent
Conference
12
PageRank 
References 
Authors
0.62
10
2
Name
Order
Citations
PageRank
Moritz Steiner171544.39
Ernst Biersack22176220.80