Simulation analysis of a switched event building architecture using token by-pass

<P>At High Energy Physics experiments, extensive parallelism allowsscalable, high-bandwidth data acquisition systems. On-line eventbuilding of physical events is only feasible by using switch-basedevent builders. A scalable switch-based event building architectureis introduced. A special, non-starving token passing mechanismprovides high throughput for acquisition of stochastic detector data.The event building architecture with the associated event building method is analyzed by simulation.