Re: [Openstack] [Openstack-operators] linuxbridge and vxlan set up

2014-02-27 Thread Narayan Desai
We're using vxlan as transport with nova-network. We have a technical need to use VXlan, but weren't happy with the state of neutron for a production deploy yet. We basically setup a vxlan interface as the master interface for VlanManager, and then used dot1q tagging for tenant isolation. It is a

Re: [Openstack] How to enable jumbo frames for instances ?

2014-01-28 Thread Narayan Desai
(these comments are from work we did with nova-network a while ago. These comments are only focused on the underlying kvm performance, not the gymnastics to get neutron to build out the right configuration) We've seen similar performance (around 3 Gbps) for GRE tunnels on machines that can easily

Re: [Openstack] [Openstack-operators] Extreme network throughput tuning with KVM as hypervisor

2014-01-15 Thread Narayan Desai
d ? We are just using virtio. > > thanks! > > > > > > On Wed, Jan 15, 2014 at 1:32 PM, Narayan Desai wrote: > >> Are you using virtio, and vhost_net? >> >> Also, where are you tuning those parameters, host or guest? The ethernet >> level ones will

Re: [Openstack] [Openstack-operators] Extreme network throughput tuning with KVM as hypervisor

2014-01-15 Thread Narayan Desai
delay is on the RX side, this > means, the server responding. > So, we were thinking about going upper with ring or txqueuelen settings. > > Any idea ? > > > > > > > *Alejandro Comisario #melicloud CloudBuilders* > Arias 3751, Piso 7 (C1430CRG) > Ciudad de Buenos Ai

Re: [Openstack] [Openstack-operators] Extreme network throughput tuning with KVM as hypervisor

2014-01-14 Thread Narayan Desai
We don't have a workload remotely like that (generally, we have a lot more demand for bandwidth, but we also generally run faster networks than that as well), but 1k pps sounds awfully low. Like low by several orders of magnitude. I didn't measure pps in our benchmarking, but did manage to saturat