[openstack-dev] [neutron]OVS connection tracking cleanup

Ajay Kalambur (akalambu) akalambu at cisco.com
Mon Sep 11 16:15:15 UTC 2017

I am performing a scale test and I see that after creating 500 Vms with ping traffic between them it took almost 1 hr for the connection tracking
To clean up and ovs agent was busy doing this and unable to service any new port bind requests on some computes for almost an hr
It took that long for conntrack clean up to complete

I see the following bug

And I also have the fix below

Still see really long times for conntrack cleanup

What is the solution to this problem in scale scenarios?

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