Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (s2): 113-117.doi: 10.13190/jbupt.2006s2.113.ouyr

• Papers • Previous Articles     Next Articles

Model research and Performance Analysis of BitTorrent-Like P2P System

OUYANG Rong, LEI Zhen-ming   

  1. School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-09-01 Revised:1900-01-01 Online:2006-11-30 Published:2006-11-30
  • Contact: OUYANG Rong

Abstract:

A model and performance analysis of BitTorrent(BT)-like P2P system was presented. The peer behavior in this system was analyzed in detail. A peer model, seed model, file fragment model, interesting and choking model and peer selection model were built while considering the effects of file fragment on this system. The probability of a peer interested in neighbor peer at BT sub-system, the probability of a peer being choked by neighbor peer, and the probability of uploading peer being selected were analyzed. By this model, the relation between the generant probability of a peer uploading behavior and the whole peer number at BT sub-system was studied. The data result showed that the generant probability of a peer uploading behavior decreased as the whole peer number at BT sub-system increased.

Key words: BitTorrent, file fragment, choke

CLC Number: