不受CNI限制的网络性能加速器，使用eBPF技术 | KC23

CNI-Agnostic Network Performance Accelerator with eBPF - Mengxin Liu, Alauda & Yizhou Xu, Intel

不受CNI限制的网络性能加速器，使用eBPF技术 | CNI-Agnostic Network Performance Accelerator with eBPF - Mengxin Liu, Alauda & Yizhou Xu, Intel

作者们提出了一种基于eBPF的网络加速器，用于CNIs。他们使用eBPF实现了内部节点的TCP通信和KubeVirt网络加速。他们对各种工作负载进行了加速测试。结果显示，性能显著提升，包括最高40%的网络吞吐量提升和最高50%的延迟降低。他们的方法是将eBPF程序附加到虚拟网络接口上，并进行优化，如绕过内核堆栈和启用套接字之间的直接数据传输。这些优化可以加快网络吞吐量，在边缘、5G和KubeVirt等特定场景中降低延迟。他们方法的关键优势是其对CNI的不可知性。这使得加速器可以在不修改底层CNI或网络设置的情况下无缝工作。运营商和开发人员可以通过简单的部署启用加速，而不必担心所使用的CNI的具体细节。

The authors present an eBPF-based network accelerator for CNIs. Using eBPF, they implement inner node TCP communication and KubeVirt network acceleration.They have tested the acceleration on various workloads. Their results show significant performance gains including up to 40% network throughput improvements and up to 50% lower latency.  Their method attaches eBPF programs to virtual network interfaces and perform optimizations like by bypassing the kernel stack and enabling direct data transmission between sockets. These optimizations can speed up network throughput and reduce latency in certain scenarios like edge, 5G and KubeVirt. The key benefit of their approach is its CNI agnosticism. This allows the acceleration to work seamlessly without modification to the underlying CNIs or networking setup.Operators and developers can enable the acceleration through a simple deployment without worrying about the specifics of the CNIs being used.

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