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

Kazuki Ueda, Tatsushi Kikutani, Takahiro Yakoh

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルProceedings of 2014 10th IEEE Workshop on Factory Communication Systems, WFCS 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(印刷版)9781479932351
DOI
出版ステータスPublished - 2014 1 1
イベント10th IEEE Workshop on Factory Communication Systems, WFCS 2014 - Toulouse, France
継続期間: 2014 5 52014 5 7

出版物シリーズ

名前IEEE International Workshop on Factory Communication Systems - Proceedings, WFCS

Other

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

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 産業および生産工学

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