Measurement automation and result processing in timing analysis of a Linux-based CAN-to-CAN gateway

The aim of this paper is to describe the method used to analyze timing properties of a Linux-based CAN-to-CAN gateway and to briefly present some of the analysis results. The considered gateway, implemented as an embedded system, can significantly simplify rapid prototyping of CAN-based distributed systems such as those used in automotive applications. The main interest was to measure the latencies induced by the gateway under the wide range of conditions such as various types of traffic, gateway configurations, additional system load and Linux kernel versions. The combinations of these conditions resulted in almost 400 different experiments and more than 600 graphs visualizing the results. A simple method to automate the experiments and to effectively draw conclusions from such a high number of experiments is proposed.