Open Stack

Hi,

i've detected a performance issue by accessing an floating ip in a
different openstack network (same tenant).

example:
i have one tenant with two internal networks.
each network has its own vrouter which is connectet to the extnet.
the physical network infrastructure is 10Gbit/s.

         networkA   
   VM1 ------|               extnet
             |----|vrouter1|----|
   VM2 ------|                  |
                                |---ext
         networkB               |
   VM3 ------|                  |
             |----|vrouter2|----|
   VM4 ------|

VM1 -> VM2	~8,6Gbit/s
VM3 -> VM4	~8,6GBit/s
VM1 -> vrouter1	~8.6GBit/s
VM4 -> vrouter2 ~8,6GBit/s
vrouter1 -> vrouter2 ~8,6Gbits
VM1 -> VM4	~2,5GBit/s
VM1 -> vrouter2 ~2,5Gbit/s

detected with iperf3
it's an openstack newton environment with openvswitch 2.6.1
VXLAN mtu is 8950 and 9000 for physical interfaces

does anybody has an idea what could be the cause of the performance
issue?

Best regards
Kim