<div dir="ltr">The biggest improvement will be switching to native netlink calls: <a href="https://review.openstack.org/#/c/470912/">https://review.openstack.org/#/c/470912/</a><div><br></div><div>How many VMs were on a single compute node?</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 11, 2017 at 9:15 AM, Ajay Kalambur (akalambu) <span dir="ltr"><<a href="mailto:akalambu@cisco.com" target="_blank">akalambu@cisco.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi</div>
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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 </div>
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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 </div>
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It took that long for conntrack clean up to complete</div>
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I see the following bug</div>
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<a href="https://bugs.launchpad.net/neutron/+bug/1513765" target="_blank">https://bugs.launchpad.net/<wbr>neutron/+bug/1513765</a></div>
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<div>And I also have the fix below</div>
<div><a href="https://git.openstack.org/cgit/openstack/neutron/commit/?id=d7aeb8dd4b1d122e17eef8687192cd122b79fd6e" target="_blank">https://git.openstack.org/<wbr>cgit/openstack/neutron/commit/<wbr>?id=<wbr>d7aeb8dd4b1d122e17eef8687192cd<wbr>122b79fd6e</a></div>
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<div>Still see really long times for conntrack cleanup</div>
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<div>What is the solution to this problem in scale scenarios?</div><span class="HOEnZb"><font color="#888888">
<div>Ajay</div>
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