Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Rarest first and choke algorithms are enough
Proceedings of the 6th ACM SIGCOMM conference on Internet measurement
ChunkSim: simulating peer-to-peer content distribution
SpringSim '07 Proceedings of the 2007 spring simulaiton multiconference - Volume 1
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Measurements of real-world peer-to-peer systems have shown that up to 80% of the peers are so-called freeriders; they do not contribute any resources to the system but use resources from other peers. Freeriding is commonly considered a problem, yet no quantitative evaluation about its real effects has been performed. In this paper, we present a quantitative evaluation of the effects of freeriding on download times and service loads in a peer-to-peer content distribution system. Our results show that allowing freeriding in many cases significantly improves overall system performance. The improvement is more pronounced in realistic, heterogeneous environments.