BitTorrent Under a Microscope: Towards Static QoS Provision in Dynamic Peer-to-Peer Networks

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For Peer-To-Peer (P2P) networks continually to flourish, QoS provision is critical. However, the P2P networks are notoriously dynamic and heterogeneous. As a result, QoS provision in P2P networks is a challenging task with nodes of the varying and intermittent throughput. This raises a fundamental problem: is stable and delicate QoS provision achievable in the highly dynamic and heterogeneous P2P networks? In this paper, the authors investigate BitTorrent (BT) with the particular interest in its QoS performance in the highly dynamic and heterogeneous network. Their contributions are two-fold.