Time-critical cyber-physical applications demand the timely delivery of information. In this work, we employ a high-speed packet processing testbed to quantitatively analyze a packet forwarding application running on a shared memory multi-processor architecture, where efficient synchronization of concurrent access to a Forwarding Information Base is essential for low-latency and timely delivery of information. While modern packet processing frameworks are optimized for maximum packet throughput, their ability to support timely delivery remains an open question. Here we focus on the age of information performance issues induced by throughput-focused packet processing frameworks. Our results underscore the importance of careful selection of offered load parameters and concurrency constructs in such frameworks.

翻译：时间关键的网宇物理应用要求信息的及时传递。在本研究中，我们利用高速数据包处理测试平台，对运行于共享内存多处理器架构上的数据包转发应用进行定量分析，其中，高效同步对转发信息库的并发访问对于低延迟和及时信息传递至关重要。尽管现代数据包处理框架针对最大数据包吞吐量进行了优化，但其支持及时传递的能力仍是一个悬而未决的问题。在此，我们聚焦于以吞吐量为中心的数据包处理框架所引发的信息时效性能问题。我们的结果强调了在此类框架中审慎选择加载参数与并发构建的重要性。