Promoting the use of end-to-end congestion control in the Internet
IEEE/ACM Transactions on Networking (TON)
Modeling and performance analysis of BitTorrent-like peer-to-peer networks
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Performance of peer-to-peer networks: service capacity and role of resource sharing policies
Performance Evaluation - P2P computing systems
Bandwidth Trading in Unstructured P2P Content Distribution Networks
P2P '06 Proceedings of the Sixth IEEE International Conference on Peer-to-Peer Computing
Clustering and sharing incentives in BitTorrent systems
Proceedings of the 2007 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Efficient Simulation of Large-Scale P2P Networks: Compact Data Structures
PDP '07 Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing
Efficient Simulation of Large-Scale P2P Networks: Modeling Network Transmission Times
PDP '07 Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing
Efficient simulation of large-scale p2p networks: packet-level vs. flow-level simulations
Proceedings of the second workshop on Use of P2P, GRID and agents for the development of content networks
TCPeer: rate control in P2P over IP networks
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
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Peer-to-Peer (P2P) networks can reduce the distribution cost of large media files for the original provider of the data significantly. Thereby, the BitTorrent protocol is widely used in the Internet today. Most research work studies the protocol analytically, by simulations at the flow-level or real world experiments. For flow-level simulations the influence of neglecting packet-level characteristics (e.g. TCP) is not yet quantified. Therefore, this paper compares packet-level simulation results with flow-level values and analytically derived bounds. Our findings show that BitTorrent is near to optimal at flow-level for different scenarios. Naturally, packet-level results deviate more from the optimal values but differences are at most around 30% in our simulations. Furthermore, we show that the propagation delay can significantly influence the peer selection in BitTorrent and the download performance of the peers. Hence, the unchoking/choking algorithm in BitTorrent exploits implicitly network proximity.