Vm-to-VM communication

[1nerdyguy]

I'm on a Microserver with 1 nic, all hooked into the same bridge. I transfer a lot of files from VM to VM, for various reasons. However, by the speeds I'm getting (29 MB/s for large ISOs), I'm assuming this is all going out the bridge and then coming back in the bridge to the other VM.

Is there a better way to transfer files Vm to Vm? I'm thinking something like the Vmware VSwitch.

I have not tried OpenVswitch, as I am unfamiliar with the config on it, but would love that it worked out to be that easy.

 

[spirit]

Hi,

you should be able to reach 10Gb/s with linux bridge or openvswitch.

29MB/s is really slow.

What is your guest vms os ?

do you use virtio-net ?

 

[1nerdyguy]

One VM is a Ubuntu 14.04 KVM box, with virtio nic. The other one is a Ubuntu 12.04 OpenVZ instance. I've tried Iperf, SCP, you name it, all slow.

 

[aderumier]

>> Ubuntu 12.04 OpenVZ instance.

veth (bridged) or venet (routed)?

(veth is known to be slower, but not so slow)

I don't known if you can test between 2 kvm guests ?

 

[1nerdyguy]

Don't have a second KVM guest on here, but I'll get one started on install. It's a VETH network on the OpenVZ.