Parallel implementation of real-time communication and IP communication by using multiple ring buffers

Kazuki Ueda, Tatsushi Kikutani, Takahiro Yakoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Recent Linux[7] kernel introduced an interrupt mitigation method called NAPI to reduce the overhead of interrupt handling procedures caused by frame arrival and transmission. However, NAPI caused serious delay and jitter in such procedures. On the other hand, many conventional real-time communication mechanisms were implemented independently to the existing network stack, and most of such mechanisms disabled the stack. There-fore, it is difficult to utilize both of real-time communication and IP communication in parallel. This paper proposed a parallel implementation method to realize both of real-time communication and IP communication simultaneously in a single computer unit. This method implement real-time network stack and IP network stack in parallel by using multiple queue functionality in a NIC (network interface card). Also, this method applied the interrupt mitigation method only to the IP stack. Therefore, this method achieved to reduce the overhead of the wide bandwidth of IP traffic, also to keep delay and jitter of real-time traffic enough small. Some experiments were conducted to measure the performance of the proposed method. The RTT (round trip time) delay of realtime communication was kept lower than 100μs even in high traffic load of 800 Mbit/s with small jitter; while the RTT of IP communication varied between 100μs to 20 ms. This paper introduced the design, implementation, and evaluation of the proposed method.

Original languageEnglish
Title of host publicationProceedings of 2014 10th IEEE Workshop on Factory Communication Systems, WFCS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479932351
DOIs
Publication statusPublished - 2014 Jan 1
Event10th IEEE Workshop on Factory Communication Systems, WFCS 2014 - Toulouse, France
Duration: 2014 May 52014 May 7

Publication series

NameIEEE International Workshop on Factory Communication Systems - Proceedings, WFCS

Other

Other10th IEEE Workshop on Factory Communication Systems, WFCS 2014
CountryFrance
CityToulouse
Period14/5/514/5/7

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

Cite this

Ueda, K., Kikutani, T., & Yakoh, T. (2014). Parallel implementation of real-time communication and IP communication by using multiple ring buffers. In Proceedings of 2014 10th IEEE Workshop on Factory Communication Systems, WFCS 2014 [6837607] (IEEE International Workshop on Factory Communication Systems - Proceedings, WFCS). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WFCS.2014.6837607