Title :
Freeriding not (always) considered harmful
Author :
Kangasharju, Jussi
Author_Institution :
Dept. of Comput. Sci., Univ. of Helsinki, Helsinki
Abstract :
Measurements of real-world peer-to-peer systems have shown that up to 80% of the peers are so-called free-riders; they do not contribute any resources to the system but use resources from other peers. Free-riding 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 free-riding on download times and service loads in a peer-to-peer content distribution system. Our results show that allowing free-riding in many cases significantly improves overall system performance. The improvement is more pronounced in realistic, heterogeneous environments.
Keywords :
peer-to-peer computing; download times; free-riding quantitative evaluation; peer-to-peer content distribution system; Analytical models; Bandwidth; Internet; Modems; Peer to peer computing; Performance evaluation; System performance;
Conference_Titel :
Information Networking, 2009. ICOIN 2009. International Conference on
Print_ISBN :
978-89-960761-3-1
Electronic_ISBN :
978-89-960761-3-1
