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Broadcatching is a promising mechanism to improve the experience of BitTorrent users by automatically downloading files advertised through RSS feeds. However, though widely used, the mechanism itself has not been well studied. In this paper, we conducted extensive experiments on PlanetLab to evaluate the performance of Broadcatching under different typical scenarios. The results demonstrated the effectiveness...
Network coordinates (NC) system is an efficient mechanism for Internet distance prediction with limited measurements. In this paper, we identify the intrinsical cause for the inadequate accuracy of the simulation based NC algorithms. We then propose Pharos, a fully decentralized and hierarchical scheme, to remedy this problem. Pharos leverages multiple coordinate sets at different distance scales,...
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