[ovirt-users] Are there in oVirt any limitations on network interfaces?

Hi, We are experiencing some network limitations on our virtual machines, we have done some initial testing to pinpoint the exact issue. Hardware: 2 x 25G NICs per physical machine 2 x 100G interlinks between datacenters iPerf test between two VMs in same host on same cluster and same datacenter reveals ~20GB/s (what is more or less expected) iPerf test between two VMs in differet host on same cluster and same datacenter reveals ~20GB/s (what is more or less expected) iPerf test between two VMs in differet host on different cluster and different datacenter reveals ~10GB/s (what is half or less than expected) There are no firewalls or other identified blockeing equipment between the datacenters. The only difference, as I see it, are traffic going across the 100G interlinks. Are there anything that needs to be tuned / setup in the NICs either on the VM or the host to be able to get higher speed between the datacenters? /John