Using probabilist models for studying realistic systems: a case study of pastry

  • Authors:
  • Guillaume Châtelet;Benoit Parreaux;Yves-Marie Quemener

  • Affiliations:
  • France Telecom, R&D Division, Lannion, France;France Telecom, R&D Division, Lannion, France;France Telecom, R&D Division, Lannion, France

  • Venue:
  • SDL'07 Proceedings of the 13th international SDL Forum conference on Design for dependable systems
  • Year:
  • 2007

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Abstract

Telecommunication services will be in the future built upon peer-to-peer protocols. This implies the need to have strong guarantees of the dependability of those protocols. One building block for such protocols are distributed hash tables (DHT in short), and Pastry is a protocol implementing distributed hash tables. We have designed a probabilist model of Pastry that enabled us to simulate it. In particular, we have studied the performance of the protocol with respect to the number of nodes. We have used for this study probabilistic model checking tools used in the RNTL project Averros. This is a significant application of academic tools to industrial concerns.