Measurement

The performance analysis and validation of distributed real-time systems poses significant challenges due to high accuracy requirements at the measurement tools. We introduce two low cost approaches to measure end-to-end latency and jitter of time-triggered Ethernet traffic, synchronization and hardware precision. A software based facility applies the real-time Kernel extension for Linux and uses COTS,whereas a hardware based approach uses a microcontroller and a standard workstation connected via dual port memory.