loopback-network KVM testing on Ubuntu 16.04 via the Phoronix Test Suite. Red Hat Virtio device: Processor: Intel Xeon E5-2650 v2 @ 2.59GHz (4 Cores), Motherboard: Alibaba Cloud ECS, Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 8192 MB RAM, Disk: 40GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-63-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM Loopback TCP Network Performance Time To Transfer 10GB Via Loopback Seconds < Lower Is Better Red Hat Virtio device . 94.23 |================================================