Gossiping with Multiple Messages

Abstract— This paper investigates the dissemination of multiple pieces of information in large networks where users contact each other in a random uncoordinated manner, and users upload one piece per unit time. The underlying motivation is the design and analysis of piece selection protocols for peer-to-peer networks which disseminate files by dividing them into pieces. We first investigate one-sided protocols, where piece selection is based on the states of either the transmitter or the receiver. We show that any such protocol relying only on pushes, or alternatively only on pulls, will be inefficient in disseminating all pieces to all users. We propose a hybrid one-sided piece selection protocol – INTERLEAVE – and show that by using both pushes and pulls it disseminates k pieces from a single source to n users in 10(k + log n) time, while obeying the constraint that each user can upload at most one piece in one unit of time. An optimal, unrealistic centralized protocol would...

• Type: Conference
• Year: 2007
• Where: INFOCOM
• Authors: Sujay Sanghavi, Bruce Hajek, Laurent Massoulié
• Keywords: Communications, INFOCOM 2007, Investigate One-sided Protocols, Piece Selection, Piece Selection Protocol