Perf Characteristics of Userspace & Kernel-Space Datapaths in Container Networking

on YouTube ↗14m

" summary

Proof-of-concept VDUSE OVS-DPDK userspace datapath is implemented for OpenShift using OVS-DPDK, a VDUSE kernel driver (control via a character device) and shared-memory data paths, with CPU isolation and DPDK tuning used for benchmarks. Results show VDUSE OVS-DPDK userspace datapath delivers on-par or faster for small/medium packets, achieves higher TX/RX PPS, and reports smaller latency stddev, but lags on large packets where kernel veth+OVS scaling still wins.

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" chapters (9)

1. 0:00Userspace datapaths intro
2. 1:08ViDPA background and goals
3. 3:42Hardware ViDPA evolution
4. 7:43ViDPA and OVS-DPDK in OpenShift
5. 9:35Benchmarking setup
6. 10:40TCP throughput results
7. 11:45TCP latency comparison
8. 12:26TXPS and RX PPS findings
9. 13:31ViDPA status and future

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