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Thursday, November 16 • 9:10am - 9:30am
OvS-CD: Optimizing Flow Classification for OvS using the DPDK Membership Library

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In this talk we will present a data-plane optimization for OvS, we will highlight our prototype and experimental results when applying the "new" DPDK Membership Library to improve flow classification for Open vSwitch (OvS) and achieve a 2X-3X higher throughput.

OvS-DPDK uses tuple search in the Mega Flow Cache (MFC) where the tuples are sequentially searched for a flow match. With increasing number of flows and tuples this sequential search becomes a throughput bottleneck. In this talk we present how we used the DPDK Membership Library to create a two-level lookup mechanism for the MFC supporting millions of flows. Where the first-level is a summary that caches and direct a flow to the tuple it will most probably match on, and thus, avoids the overhead of the sequential search of tuples. For the case of 20 subtables and 10K flows, the throughput performance is improved by almost 2.7X using our technology vs. the native OvS-DPDK.

Thursday November 16, 2017 9:10am - 9:30am PST