Hello everyone! 

Why the performance of Stein concurrent creation of VM is not as good as that of Ocata?

Create 250 VMs concurrently, the O version only needs 160s, but the S version needs 250s.

Security_group and port_security functions are disabled.

Among 250 VMs, there are single network card and multi-network card.

Using neutron-openvswitch-agent.