Performance analysis of multiple-packet messages in uni-directional bus networks

C. Chao, M. Ilyas
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引用次数: 3

Abstract

A slotted p/sub i/-persistent protocol and the effects of random message length are considered. Since the length of messages is not fixed, a message is divided into a number of equal-size packets such that a packet can fit into one slot. The utilization of the network degrades because of the increasing transmission overhead owing to excess packet headers and a possible empty portion in the last packet of any message. Furthermore, the increasing ratio of message-to-packet length increases the interdependence among the nodes and thus affects the bus access probabilities. An analytical model is presented to determine the upper and lower bounds to the access probabilities. Due to the complexity of this problem, only two nodes are considered. Simulation results showing average queue length performance versus different message statistics are also presented.<>
单向总线网络中多包消息的性能分析
考虑了一个有槽的p/sub / i/-persistent协议和随机消息长度的影响。由于消息的长度不是固定的,因此将消息分成许多大小相等的数据包,以便一个数据包可以放入一个插槽。由于多余的数据包头和任何消息的最后一个数据包中可能存在空部分,传输开销增加,因此网络利用率降低。此外,消息与包长度比值的增加增加了节点之间的相互依赖性,从而影响总线访问概率。提出了一种确定接入概率上界和下界的解析模型。由于这个问题的复杂性,我们只考虑两个节点。仿真结果显示了平均队列长度性能与不同消息统计的对比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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