Performance Analysis of Time-Triggered Ether-Networks Using Off-the-Shelf-Components

Florian Bartols, T. Steinbach, Franz Korf, T. Schmidt
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引用次数: 21

Abstract

The performance analysis and validation of distributed real-time systems poses significant challenges due to high accuracy requirements at the measurement tools. A fully synchronized time-scale at ultrafine granularity is not easy to generate. Even though there are several analyzer tools for standard switched Ethernet, these tools cannot be applied in time-triggered networks, since they do not meet the requirements of synchronized packet generation. This paper introduces a low cost and lightweight approach to measure end-to-end latency of time-triggered Ethernet traffic with off-the-shelf components. By using standard computer hardware and a real-time Linux Kernel, it is shown that measurement can be achieved in a resolution of microseconds. Furthermore, a validation with an Ethernet performance analyzer and a mathematical framework is presented to check the given results.
使用现成组件的时间触发以太网络性能分析
分布式实时系统的性能分析和验证由于对测量工具的高精度要求而面临着巨大的挑战。超细粒度的完全同步时间尺度是不容易产生的。尽管有几种用于标准交换以太网的分析工具,但这些工具不能应用于时间触发网络,因为它们不能满足同步数据包生成的要求。本文介绍了一种低成本和轻量级的方法来测量使用现成组件的时间触发以太网流量的端到端延迟。通过使用标准的计算机硬件和实时Linux内核,可以实现微秒级分辨率的测量。此外,还利用以太网性能分析仪和数学框架对给定结果进行了验证。
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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