On uncoordinated file distribution with non-altruistic downloaders

Ilkka Norros, Balakrishna Prabhu, Hannu Reittu

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)


    We consider a BitTorrent-like file sharing system, where the peers interested in downloading a large file join an overlay network. The seed node possessing the file stays in the system, whereas all other peers are non-altruistic in the sense that they leave the system as soon as they have downloaded the whole file. We consider a flash crowd scenario, where the peers join the overlay simultaneously. We show that the chunk selection algorithm is critical, propose an analytic approach to the process, and find that the encounters can be restricted to neighbours in a Chord overlay without losing much in performance.
    Original languageEnglish
    Title of host publicationProceedings of the 20th International Teletraffic Congress, ITC20 2007
    Subtitle of host publicationManaging Traffic Performance in Converged Networks
    EditorsL. Mason, T. Drwiega , J. Yan
    Place of PublicationBerlin
    ISBN (Electronic)978-3-540-72990-7
    ISBN (Print)978-3-540-72989-1
    Publication statusPublished - 2007
    MoE publication typeA4 Article in a conference publication
    Event20th International Teletraffic Congress, ITC20 2007: Managing traffic performance in converged networks - Ottawa, Canada
    Duration: 17 Jun 200721 Jun 2007

    Publication series

    SeriesLecture Notes in Computer Science


    Conference20th International Teletraffic Congress, ITC20 2007
    Abbreviated titleITC 2007


    • peer-to-peer file-sharing


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