  Controller networks in today's automotive systems consist of more than 100
ECUs connected by various bus protocols. Seamless operation of the entire
system requires a well-orchestrated interaction of these ECUs. Consequently, to
ensure safety and comfort, a performance analysis is an inherent part of the
engineering process. Conducting such an analysis manually is expensive, slow,
and error prone. Tool support is therefore crucial, and a number of approaches
have been presented. However, most work is limited to either network latencies
or software latencies which results in an analysis gap at the transition
between different layers of the communication stack. The work presented here
introduces an approach to close this gap. Furthermore, we discuss the
integration of different methods to obtain an end-to-end latency analysis.
