New stability results for adversarial queuing

  • Authors:
  • Zvi Lotker;Boaz Patt-Shamir;Adi Rosén

  • Affiliations:
  • Tel Aviv University, Tel Aviv, Israel;Tel Aviv University, Tel Aviv, Israel;Technion, Haifa, Israel

  • Venue:
  • Proceedings of the fourteenth annual ACM symposium on Parallel algorithms and architectures
  • Year:
  • 2002

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Abstract

We consider the model of "adversarial queuing theory" for packet networks introduced by Borodin et al. [6]. We show that the scheduling protocol First-In-First-Out (FIFO) can be unstable at any injection rate larger than $1/2$, and that it is always stable if the injection rate is no more than 1/d, where d is the length of the longest route used by any packet. We further show that every work-conserving (i.e., greedy) scheduling policy is stable if the injection rate is no more than 1/(d+1).