Software switching, a.k.a virtual switching, plays a vital role in network virtualization and network function virtualization, enhances configurability, and reduces deployment and operational costs. Software switching also facilitates the development of edge and fog computing networks by allowing the use of commodity hardware for both data processing and packet switching. Despite these benefits, characterizing and ensuring deterministic performance with software switches is harder, compared to physical switching appliances. In particular, achieving deterministic performance is essential to adopt software switching in mission-critical applications, especially those deployed in edge and fog computing architectures. In this paper, we study the impact of switch configurations on bandwidth slicing and predictable packet latency. We demonstrate that latency and predictability are dependent on the implementation of the bandwidth slicing mechanism and that the packet schedulers used in OVS Kernel-Path and OVS-DPDK each focus on different aspects of switching performance.

中文翻译：

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使用 Open vSwitch 实现可预测的带宽切片

软件交换，又名虚拟交换，在网络虚拟化和网络功能虚拟化中起着至关重要的作用，增强了可配置性，并降低了部署和运营成本。软件交换还允许使用商用硬件进行数据处理和数据包交换，从而促进边缘和雾计算网络的发展。尽管有这些好处，与物理交换设备相比，用软件交换表征和确保确定性性能更难。特别是，实现确定性性能对于在关键任务应用程序中采用软件切换至关重要，尤其是那些部署在边缘和雾计算架构中的应用程序。在本文中，我们研究了交换机配置对带宽切片和可预测数据包延迟的影响。