Fastest network setup for 10 Gbit

kvm

asked 2013-12-08 11:53:49 -0600

ffi
11 ●1 ●1 ●2

We currently are running a default Grizzly setup on Debian and would like to utilize our 10 Gbit network. However, our instances only provide 500 Mbit. We suspect the GRE tunnels for this limitation.

Hence, we want to setup a Havanna installation and are in search for the fastest network topology for our private single tenant cloud. Nova-network or Neutron? If Neutron, which driver/plug-in to choose (Tunneling, VLAN,...)?

Is FlatDHCP in multi-host mode with nova-network a good idea?

Is it even possible to get 10 Gbit without SR-IOV/PCI-passthrough?

Thanks in advance

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Comments

I'm curious if you have compared your vm-to-vm transfer speeds with bare-metal to bare-metal? I can't remember the exact numbers, but I previously did this on a bonded 10gb network. There was a difference, but it ended up being rather negligible.

jtopjian ( 2013-12-13 01:23:56 -0600 )edit

Bare-metal to bare-metal is about 9.4 Gbit without tunings. If it was negligble at your side, which netwerk setup do you have? Are you using nova network or neutron? I tested the VM-to-VM speed with SR-IOV: 8.3 Gbit without tunings. However, SR-IOV implicates manual configuring eth1 in VMs. :(

ffi ( 2013-12-13 02:34:14 -0600 )edit

Actually my results were reverse: I was unable to get noticeably better transfers on bare-metal than vm. I can't remember the rates, but it was <1gb. I was able to have several parallel transfers at that speed, though. I was not using SR-IOV. I was using VlanManager, btw.

jtopjian ( 2013-12-13 09:22:04 -0600 )edit

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