A multi-faced measurement study on a large private BitTorrent community

Qing Chao Cai, Kwok Tung Lo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


Private BitTorrent community is becoming increasingly popular, and generates a huge amount of Internet traffic. In this paper, we present a thorough measurement study on a famous private BitTorrent community, CHDBits. We find that the content of torrents published in this community are highly available, although many torrents may have been released for a very long time, and we also obtain that users in most torrents could download at a high rate. By studying user profiles, we show that many users have participated in multiple torrents, thereby generating a great amount of upload and download traffic. The user profiles also reveal that almost all users maintain a high share ratio, and are willing to contribute to content distribution by spending more time in seeding than in leeching (downloading). Our study suggests that the bandwidths of a user have a significant impact on their behavior. Low bandwidth users are more likely to participate in the torrents with a smaller content size or a higher popularity; compared with low bandwidth users, high bandwidth users tend to participate in more torrents, but spend much less time in seeding.
Original languageEnglish
Pages (from-to)32-48
Number of pages17
JournalPeer-to-Peer Networking and Applications
Issue number1
Publication statusPublished - 1 Jan 2013


  • BitTorrent
  • Measurement study
  • Peer-to-peer
  • Performance analysis
  • Private BitTorrent community

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications


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