Using DPDK + OVS for deterministic low-latency communication - Felix Moessbauer & Henning Schild, Siemens AG
This talk presents a war-story about our efforts to use OVS with DPDK backend for deterministic and super-low latency ethernet communication. We give an overview on the system tuning, implementation aspects as well as determinism issues we ran into when implementing the system. An example would be sflow monitoring, that broke the determinism. As part of the talk, we will present a DPDK based measurement application to trace down latency spikes in DPDK as well as in the Linux kernel. Finally, we conclude with some performance (FIFO latency) numbers of the system.