Dual-Level traffic smoothing technique over switched ethernet for hard real-time communication

Authors:
Hai Jin;Minghu Zhang;Pengliu Tan
Affiliations:
Cluster and Grid Computing Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China;Cluster and Grid Computing Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China;Cluster and Grid Computing Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China
Venue:
ISCIS'06 Proceedings of the 21st international conference on Computer and Information Sciences
Year:
2006

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Abstract

This paper introduces a novel dual-level traffic smoothing technique for hard real-time communication over Fast/Gigabit switched Ethernet without any modification to existing Ethernet hardware. First, the necessary restricted conditions for hard real-time communication over switched Ethernet are analyzed using the network calculus theory. Then the dual-level traffic smoothing scheme, which combines the node-level traffic smoothing with the global-level traffic smoothing, is introduced. Finally, we make thorough measurements and the results show that the dual-level traffic smoothing mechanism can provide very good hard real-time communication performance with low system overheads and has more potential for most hard real-time and embedded control systems than other existing approaches.