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Lingering issues in distributed scheduling

Simatos, Florian and Bouman, Niek and Borst, Sem Lingering issues in distributed scheduling. (2013) In: SIGMETRICS '13 Proceedings of the ACM SIGMETRICS/international conference on Measurement and modeling of computer systems, 17 June 2013 - 21 June 2013 (Pittsburgh, United States).

(Document in English)

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Official URL: https://doi.org/10.1145/2494232.2465758


Recent advances have resulted in queue-based algorithms for medium access control which operate in a distributed fash- ion, and yet achieve the optimal throughput performance of centralized scheduling algorithms. However, fundamental performance bounds reveal that the “cautious” activation rules involved in establishing throughput optimality tend to produce extremely large delays, typically growing exponen- tially in 1/(1−ρ), with ρ the load of the system, in contrast to the usual linear growth. Motivated by that issue, we explore to what extent more “aggressive” schemes can improve the delay performance. Our main finding is that aggressive activation rules induce a lingering effect, where individual nodes retain possession of a shared resource for excessive lengths of time even while a majority of other nodes idle. Using central limit theorem type arguments, we prove that the idleness induced by the lingering effect may cause the delays to grow with 1/(1−ρ) at a quadratic rate. To the best of our knowledge, these are the first mathematical results illuminating the lingering effect and quantifying the performance impact. In addition extensive simulation experiments are conducted to illustrate and validate the various analytical results.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Eindhoven University of Technology - TU/e (NETHERLANDS)
Deposited On:01 Apr 2019 14:38

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