Understanding the Dynamic of Peer-to-Peer Systems.

Abstract

Though a few previous research efforts have inves-tigated the peer availability of P2P systems, the understanding of peer dynamic is far from adequate. Based on the running log of a file-sharing P2P sys-tem, we produced a more thorough measurement of the dynamic natures of a P2P system. We further show that due to the methodology limitation, crawler based measurement can not precisely cap-ture system dynamic natures as a whole. In this pa-per, we also emphasize some simple yet important dynamic metrics, which are omitted or neglected by previous studies because of state of the art in dura-bility analysis at that time. By a fine-grained analy-sis on the preliminary findings, we reveal a series of useful implications for the design of P2P systems. 1.