Hi,
We are moving to latest OVS viz OVS 2.12 (Earlier we were on 2.8) . We noticed a significant drop in performance for flows with conntrack (40-50% drop in Traffic going over Vxlan ) . On further analysis , we could pin this drop in performance to the below commit commit 967bb5c5cd9070112138d74a2f4394c50ae48420 Author: Darrell Ball <dlu...@gmail.com <mailto:dlu...@gmail.com> > Date: Thu May 9 08:15:07 2019 -0700 conntrack: Add rcu support. For performance and code simplification reasons, add rcu support for conntrack. The array of hmaps is replaced by a cmap as part of this conversion. Using a single map also simplifies the handling of NAT and allows the removal of the nat_conn map and friends. Per connection entry locks are introduced, which are needed in a few code paths. Has anyone noticed this and if so is there any way to get around this as well (We don't use NAT connections)? Is there a specific case where this could give better performance ? Regards Anju
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