A Throughput And Latency Comparison Of Linear And Ring Fiber Optics Buses

W. J. Bermingham; M. R. Fagotti; W. A. Rosen; R. Zeitz

doi:10.1117/12.963427

15 January 1990 A Throughput And Latency Comparison Of Linear And Ring Fiber Optics Buses

W. J. Bermingham, M. R. Fagotti, W. A. Rosen, R. Zeitz

Proceedings Volume 1179, Fiber Networking and Telecommunications; (1990) https://doi.org/10.1117/12.963427
Event: OE/FIBERS '89, 1989, Boston, United States

Abstract

Two high speed data bus networks have been analyzed and compared to determine their relative performances with respect to throughput and message latency. The two networks are the SAE Linear Token Passing Data Bus and the SAE High Speed Ring Bus. Simulation programs were created to emulate the message passing protocols for each network and to generate a file of messages of random sizes and queue times for each station. The parameters used to generate these files were varied to simulate various bus loading conditions. The sensitivity of the buses was measured against such parameters as mean-time-between-message, message size, transmission rate, and number of message priority levels. Networks with different numbers of stations were simulated for each case. For each set of conditions the throughput and latency of the two networks were compared. The results of the analysis indicate that the latency of the ring is lower at light bus loading but as the loading increases the ring saturates more quickly than the linear bus, except in the case where the mean message sizes exceed 100 words.

Citation Download Citation

W. J. Bermingham, M. R. Fagotti, W. A. Rosen, and R. Zeitz "A Throughput And Latency Comparison Of Linear And Ring Fiber Optics Buses", Proc. SPIE 1179, Fiber Networking and Telecommunications, (15 January 1990); https://doi.org/10.1117/12.963427

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