![]() |
back... |
Drawing Crowds and Bit Welfare Eytan Adar
Barter, or tit-for-tat, file sharing systems such as
BitTorrent have proven to be remarkably effective in
dealing with highly popular content. However, in
situations where a file is not as popular, or the rate of
demand is not high, it is frequently difficult to obtain the
file in a timely manner. In this paper we describe our
explorations with two techniques that attempt to address
this issue by making certain peers (those with complete
copies) more "selfish." Counterintuitively, this approach
can be shown to improve total network performance in
various metrics.
PDF (1.2 MB), SIGecom Exchanges 5(4):31-40, July 2005. |