Massive-scale deployments in cloud: The case of OpenStack networking

Jesus Llorente Santos, Mael Kimmerlin

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


The current trends in technology are shifting towards cloudification of services and massive device connectivity. Meanwhile, cloud technology is undergoing a transition from conventional full-fledged virtual machines towards lightweight container-based solutions. This results in a heavy reduction of the virtualization overhead allowing to multiply the number of running instances. There is a need for highly scalable and efficient cloud infrastructures. Our study focuses on OpenStack, as an Infrastructure-as-a-Service provider, and in particular the case of large service deployments on a single node. We conduct a comprehensive analysis of the different network building blocks used by OpenStack. This reveals important scalability limitations which negatively impact the network performance of the node and cause an unreasonably high CPU usage. We identify some of the root causes for these scaling constraints and propose a number of alternative designs. Throughout both analytical and empirical methodologies, we demonstrate the benefits of our solutions in several aspects such as scalability, efficiency and performance.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Conference on Cloud Engineering, IC2E 2018
Number of pages8
ISBN (Electronic)9781538650080
Publication statusPublished - 16 May 2018
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Cloud Engineering - Orlando, United States
Duration: 17 Apr 201820 Apr 2018


ConferenceIEEE International Conference on Cloud Engineering
Abbreviated titleIC2E
Country/TerritoryUnited States


  • Cloud computing
  • Firewall
  • Linux
  • Networking
  • Neutron
  • OpenStack
  • Scalable networking
  • Virtualization


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  • TAKE-5 - Manner

    Manner, J., Ferrer Guasch, V., Sonntag, S., Kimmerlin, M., Schulte, L. & Boz, E.


    Project: Business Finland: Other research funding

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