License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ECRTS.2017.25
URN: urn:nbn:de:0030-drops-71707
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Qian, Tao ; Mueller, Frank ; Xin, Yufeng

A Linux Real-Time Packet Scheduler for Reliable Static SDN Routing

LIPIcs-ECRTS-2017-25.pdf (0.8 MB)


In a distributed computing environment, guaranteeing the hard deadline for real-time messages is essential to ensure schedulability of real-time tasks. Since capabilities of the shared resources for transmission are limited, e.g., the buffer size is limited on network devices, it becomes a challenge to design an effective and feasible resource sharing policy based on both the demand of real-time packet transmissions and the limitation of resource capabilities. We address this challenge in two cooperative mechanisms. First, we design a static routing algorithm to find forwarding paths for packets to guarantee their hard deadlines. The routing algorithm employs a validation-based backtracking procedure capable of deriving the demand of a set of real-time packets on each shared network device, and it checks whether this demand can be met on the device. Second, we design a packet scheduler that runs on network devices to transmit messages according to our routing requirements. We implement these mechanisms on virtual software-defined network (SDN) switches and evaluate them on real hardware in a local cluster to demonstrate the feasibility and effectiveness of our routing algorithm and packet scheduler.

BibTeX - Entry

  author =	{Tao Qian and Frank Mueller and Yufeng Xin},
  title =	{{A Linux Real-Time Packet Scheduler for Reliable Static SDN Routing}},
  booktitle =	{29th Euromicro Conference on Real-Time Systems (ECRTS 2017)},
  pages =	{25:1--25:22},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-037-8},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{76},
  editor =	{Marko Bertogna},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-71707},
  doi =		{10.4230/LIPIcs.ECRTS.2017.25},
  annote =	{Keywords: Real-time Networks, Packet Scheduling, Deadline Guarantee}

Keywords: Real-time Networks, Packet Scheduling, Deadline Guarantee
Collection: 29th Euromicro Conference on Real-Time Systems (ECRTS 2017)
Issue Date: 2017
Date of publication: 23.06.2017

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