Real-time performance measurements using UDP on Windows and Linux

Author

Prytz, Gunnar ; Johannessen, Svein

Author_Institution

ABB AS Corporate Res. Center, Billingstad

Volume

2

fYear

2005

fDate

19-22 Sept. 2005

Lastpage

932

Abstract

The move towards Ethernet based communication solutions in automation is accompanied by a need for determinism and real-time performance. The subject of this paper is the measured real-time performance across a switched Ethernet segment. Performance at 100 Mbps and 1 Gbps network speed was measured using UDP on Windows and Linux. Output stack times in the 8-16 mus range were measured with low processor load. The real-time performance decreased significantly at high processor load. Measurements of performance across the network showed that 96-98% of the time was spent in the nodes at 1 Gbps network speed. At 100 Mbps 79-87% of the time was spent in the nodes. This paper concludes that the real-time Ethernet performance is determined mostly by the end node performance

Keywords

Linux; local area networks; real-time systems; transport protocols; Linux; UDP; Windows; real-time performance measurement; switched Ethernet segment; user datagram protocol; Automation; Bandwidth; Communication switching; Delay; Ethernet networks; Linux; Multiaccess communication; Protocols; Switches; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Technologies and Factory Automation, 2005. ETFA 2005. 10th IEEE Conference on

Conference_Location

Catania

Print_ISBN

0-7803-9401-1

Type

conf

DOI

10.1109/ETFA.2005.1612771

Filename

1612771