Hi, Scenario: Kilo / VXLAN / DVR
Networking installation documentation mentions that when using tunneling protocols, ideally, we could use jumbo frames on the physical network, but then describes a "conservative" approach which is to decrease the MTU size of the guests' interfaces (i.e. to 1454), using DHCP. In my current installation, which is the 'conservative' one (guest MTU=1454, host MTU=1500) , I'm getting these approximate iperf rates: tenant network, guest to guest same host = 9.5 GB/sec tenant network, guest to guest different host = 1.4 GB/sec My questions are: - Should there be any performance gains if I opt for guest MTU = 1500, and physical/host MTU = 1550 / 1600 / 9000? - Which Neutron / ML2 plugin configuration parameters should I modify (in addition to changing physical interfaces' MTU), in order to specify an MTU greater than 1500 in the physical network that contains my tenant networks? - Anyone knows of a Neutron installation procedure or guide covering the jumbo frames approach? Thanks!
_______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
