Difference between revisions of "Publications:Efficient Support for High Traffic-Volumes of Short-Message Real-Time Communication Using an Active Ethernet Switch"

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Title Efficient Support for High Traffic-Volumes of Short-Message Real-Time Communication Using an Active Ethernet Switch
Author Xing Fan and Magnus Jonsson
Year 2004
PublicationType Conference Paper
Journal
HostPublication Proc. 10th International Conference on Real-time and Embedded Computing Systems and Applications (RTCSA’04)
DOI
Conference International Conference on Real-time and Embedded Computing Systems and Applications (RTCSA’04), Göteborg, Sweden, Aug. 25-27
Diva url http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:237574
Abstract There are several different types of communication traffic with real- time demands apparent in distributed industrial and embedded systems, for example, group communication and process synchronization. The length of these messages is often very short but the traffic volume might be really high. Standard network protocols do not normally reach very high utilization for such small messages. This paper presents a solution to efficiently support real-time short message communication over switched Ethernet. In our proposal, the Ethernet switch and the end-nodes are enhanced to combine several short messages into an Ethernet frame to improve the performance, and to give the short-message traffic real-time support on two levels, short-frame level and Ethernet frame level. Earliest Deadline First (EDF) scheduling is used in the switch and in the source nodes on both these two levels. We have characterized the performance of the network in terms of channel utilization and the number of accepted real-time channels, by simulations of the network assuming Fast Ethernet. We also show, by example, that we can reach an improvement of the possible short-message rate of 66%.
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