On the stability of two-chunk file-sharing systems

Ilkka Norros (Corresponding Author), Hannu Reittu, Timo Eirola

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)


We consider five different peer-to-peer file-sharing systems with two chunks, assuming non-altruistic peers who leave the system immediately after downloading the second chunk. Our aim is to find chunk selection algorithms that have provably stable performance with any input rate. We show that many algorithms that first looked promising lead to unstable or oscillating behaviour. However, we end up with a system with desirable properties. Most of our rigorous results concern the corresponding deterministic large system limits, but in the two simplest cases we provide proofs for the stochastic systems also.
Original languageEnglish
Pages (from-to)183-206
Number of pages24
JournalQueueing Systems
Issue number3
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed


  • file-sharing
  • stability
  • queueing network
  • urn model

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