Even Lower Latency, Even Better Fairness: Logistic Growth Congestion Control in Datacenters


Conference paper


P. Teymoori, D. A. Hayes, M. Welzl, S. Gjessing
Proceedings of IEEE 41st Conference on Local Computer Networks (LCN), IEEE Conference on Local Computer Networks, 2016 Nov, pp. 10--18


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APA   Click to copy
Teymoori, P., Hayes, D. A., Welzl, M., & Gjessing, S. (2016). Even Lower Latency, Even Better Fairness: Logistic Growth Congestion Control in Datacenters. In IEEE Conference on Local Computer Networks (pp. 10–18). https://doi.org/10.1109/LCN.2016.12


Chicago/Turabian   Click to copy
Teymoori, P., D. A. Hayes, M. Welzl, and S. Gjessing. “Even Lower Latency, Even Better Fairness: Logistic Growth Congestion Control in Datacenters.” In IEEE Conference on Local Computer Networks, 10–18, 2016.


MLA   Click to copy
Teymoori, P., et al. “Even Lower Latency, Even Better Fairness: Logistic Growth Congestion Control in Datacenters.” IEEE Conference on Local Computer Networks, 2016, pp. 10–18, doi:10.1109/LCN.2016.12.


BibTeX   Click to copy

@inproceedings{p2016a,
  title = {Even Lower Latency, Even Better Fairness: Logistic Growth Congestion Control in Datacenters},
  year = {2016},
  month = nov,
  journal = {IEEE Conference on Local Computer Networks},
  pages = {10--18},
  doi = {10.1109/LCN.2016.12},
  author = {Teymoori, P. and Hayes, D. A. and Welzl, M. and Gjessing, S.},
  booktitle = {Proceedings of IEEE 41st Conference on Local Computer Networks (LCN)},
  month_numeric = {11}
}

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Abstract

Datacenter transport has attracted much recent interest, however, most proposed improvements require changing the datacenter fabric, which hinders their applicability and deployability over commodity hardware. In this paper, we present a novel congestion controller, Logistic Growth Control (LGC), for datacenters which does not require changes to the datacenter fabric. LGC uses a similar ECN marking as in DCTCP, but adapts to congestion using the logistic growth function. This function has been proven to have nice characteristics including stability, convergence, fairness, and scalability, which are very appealing for congestion control. As a result, our LGC mechanism operates in the datacenter network in a more stable and fair manner, leading to less queuing and latency. LGC also behaves better than DCTCP, and it converges to the fair share of the bottleneck link capacity irrespective of the Round-Trip-Time (RTT). We discuss the stability and fairness of LGC using a fluid model, and show its performance improvement with simulations.


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