AuthorsP. Teymoori, D. A. Hayes, M. Welzl and S. Gjessing
TitleEven Lower Latency, Even Better Fairness:Logistic Growth Congestion Control in Datacenters
AfilliationCommunication Systems
Project(s)No Simula project
StatusPublished
Publication TypeProceedings, refereed
Year of Publication2016
Conference NameThe 41st IEEE Conference on Local Computer Networks (LCN)
Pagination10--18
Date Published11/2016
PublisherIEEE
ISBN Number978-1-5090-2054-6
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.

Notes

Dubai, UAE. November 7-10.

DOI10.1109/LCN.2016.12
Research Notes

Open access on IEEE Xplore

Citation Key24964

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