PerfVis: Visualization of Timings in Network Transmission

Analysing and optimizing the networking performance of protocol stacks requires accessible tools capable of presenting precise measurements in intuitive visualizations. Realtime presentation of live data further increases the efficiency in gaining insights, e.g. into cross-stack phenomena and configuration changes of highly configurable networking technologies such as 5G or 6G. In this context, we introduce PerfVis, a tool designed to visualize network transmission timings. By one-way measurements, the insights can be focused on direction-dependent effects of single links or short paths. Case studies involving a 5G campus network demonstrate how PerfVis can identify timing effects on lower layers of the protocol stack and highlight its capability to adapt measurements and visualizations for specific analysis tasks.