Performance Analysis of Time-Triggered Ether-Networks Using Off-The-Shelf-Components Florian Bartols, Till Steinbach, Franz Korf, Thomas C. Schmidt Department of Computer Science Hamburg University of Applied Sciences, Germany fflorian.bartols, till.steinbach, korf,
[email protected] Abstract—The performance analysis and validation of dis- validating hardware and software, or analysis of protocols and tributed real-time systems poses significant challenges due to network utilization. Many analyzers like oscilloscopes with high accuracy requirements at the measurement tools. A fully Ethernet support can be used for this kind of temporal mea- synchronized time-scale at ultrafine granularity is not easy to generate. Even though there are several analyzer tools for surement. For cost and flexibility reasons, analyzers based on standard switched Ethernet, these tools cannot be applied in standard embedded computers and real-time operating systems time-triggered networks, since they do not meet the requirements (OS) gain importance. Concerning this kind of RT network of synchronized packet generation. This paper introduces a low analysis, the contribution of this paper is a lightweight analyzer cost and lightweight approach to measure end-to-end latency that supports time measurement in the range of microseconds of time-triggered Ethernet traffic with off-the-shelf components. By using standard computer hardware and a real-time Linux at a price below 500$. It is based on an embedded PC and Kernel, it is shown that measurement can be achieved in a a Linux OS with RT Kernel patch. Additional hardware like resolution of microseconds. Furthermore, a validation with an probes is not required.