Hello, I was having serious network issues using GRE and I have been tracking it for a few weeks. Finally, I solved the issue but it needs a proper fix. To summarize, I need a way to set MTU settings of br-int and br-tun interfaces, enable MQ support in libvirt, and run "ethtool -L eth0 combined N" command in VMs.
The detailed bug report and the explanation for the issue is here: https://bugs.launchpad.net/neutron/+bug/1419069 There is a blueprint  on MQ support but it wasn't accepted. What can we do about this performance problem and a possible fix? Most people complain about GRE/VXLAN performance and the solution appears to be working. I created a bug report and let the list know to work on a better, flexible, and working solution. Please ignore the ugly patches as they are just proof of concept. Regards, Eren  https://blueprints.launchpad.net/nova/+spec/libvirt-virtio-net-multiqueue -- System Administrator https://skyatlas.com/ __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev