Bandwidth allocation in peer-to-peer file sharing networks

We present a model of bandwidth allocation in a stylized peer-to-peer file sharing network with s peers (sharers) who share files and download from each other and f peers (freeriders) who download from sharers but do not contribute files. Assuming that upload bandwidth is scarcer than download bandwidth and efficient allocation, we compute the expected bandwidth obtained by each peer. We show that (i) while the exact formula is complex, s/(s + f) is a good approximation and (ii) sharers (freeriders) obtain bandwidth larger (smaller) than s/(s + f). The paper constitutes a first step towards a general analytical foundation for scarce resource allocation in peer-to-peer file sharing networks

Bandwidth Allocation in Peer-to-Peer File Sharing Networks

We present a model of bandwidth allocation in a stylized peer-to-peer file sharing network. Given an arbitrary population of peers composed of sharers and freeriders, where all peers interconnect to maximize their allocated bandwidth, we derive the expected band- width obtained by sharers and freeriders. We show that sharers are always better off than freeriders and that the difference decreases as the size of the network grows. This paper constitutes a first step towards providing a general analytical foundation for resource allocation in peer-to-peer networks

Curs de càlcul completament integrat a Atenea

Exemple de curs completament integrat a Atenea. Materials interactius, flux de treball, comunicació amb l’alumnat, avaluació automàtica, gestió de notes, cursos en obertPeer Reviewe

Curs de càlcul completament integrat a Atenea

Exemple de curs completament integrat a Atenea. Materials interactius, flux de treball, comunicació amb l’alumnat, avaluació automàtica, gestió de notes, cursos en obertPeer Reviewe

Bandwidth Allocation in Peer-to-Peer File Sharing Networks

We present a model of bandwidth allocation in a stylized peer-to-peer file sharing network. Given an arbitrary population of peers composed of sharers and freeriders, where all peers interconnect to maximize their allocated bandwidth, we derive the expected bandwidth obtained by sharers and freeriders. We show that sharers are always better off than freeriders and that the di®erence decreases as the size of the network grows. This paper constitutes a first step towards providing a general analytical foundation for resource allocation in peer-to-peer networks.Peer-to-Peer, Network formation, Resource allocation, Congestion