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

Kevin Benton kevin at benton.pub
Mon Sep 11 16:48:48 UTC 2017


The biggest improvement will be switching to native netlink calls:
https://review.openstack.org/#/c/470912/

How many VMs were on a single compute node?

On Mon, Sep 11, 2017 at 9:15 AM, Ajay Kalambur (akalambu) <
akalambu at cisco.com> wrote:

> Hi
> 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
> https://bugs.launchpad.net/neutron/+bug/1513765
>
> And I also have the fix below
> https://git.openstack.org/cgit/openstack/neutron/commit/?id=
> d7aeb8dd4b1d122e17eef8687192cd122b79fd6e
>
>
> Still see really long times for conntrack cleanup
>
> What is the solution to this problem in scale scenarios?
> Ajay
>
>
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