Removing Roadblocks from SDN: OpenFlow Software Switch Performance on Intel DPDK
Removing Roadblocks from SDN: OpenFlow Software Switch Performance on Intel DPDK
复制标题
DOI：
10.1109/ewsdn.2013.17
复制
发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
Gergely Pongrácz;László Molnár;Z. Kis
中科院分区：
文献类型：
--
作者：
Gergely Pongrácz;László Molnár;Z. Kis
软件定义网络（SDN）承诺提供更灵活和可管理的网络，但要求数据平面具有一定程度的可编程性。这种灵活的、可编程的数据平面实现就是OpenFlow (OF)，目前它被视为SDN数据平面的主要模型。本文主要研究of在分组交换性能上的局限性。我们分享了使用基于英特尔数据平面开发工具包（DPDK）的OF 1.3原型收集的一些测量结果，并描述了一些优化思想。虽然OF 1.0可以在高速以太网交换机硬件上实现，但它在灵活性方面有一定的缺点。另一方面，OF 1.3提供了足够好的灵活性，但是OF 1.3实现的糟糕性能似乎代表了SDN采用的障碍。在本文中，我们认为与通常的观点相反，灵活性的开销相对较低。我们还认为，可编程数据平面和最先进的分层数据平面之间的明显差异主要不是由于灵活性本身，而是因为在灵活实现的情况下缺乏优化。
Software-Defined Networking (SDN) promises the vision of more flexible and manageable networks, but requires certain level of programmability in the data plane. Such a flexible, programmable data plane implementation is OpenFlow (OF) which these days is seen as primary model of SDN data plane. In this paper we focus on the limitations of OF in packet switching performance. We share some measurement results we collected using an OF 1.3 prototype based on Intel's Data Plane Development Kit (DPDK) and we also describe some optimization ideas. While OF 1.0 can be implemented on high-speed Ethernet switch hardware it has certain disadvantages in the area of flexibility. On the other hand OF 1.3 offers good-enough flexibility, but the poor performance of OF 1.3 implementations seems to represent a roadblock to SDN adoption. In this paper we argue that contrast to the common view, the overhead of flexibility is relatively low. We also argue that the apparent difference between a programmable data plane and a state of the art layered data plane is not primarily due to flexibility itself, but because the lack of optimization in case of flexible implementations.