ali KVM testing on CentOS 7.2.1511 via the Phoronix Test Suite. Red Hat Virtio device: Processor: Intel Xeon E5-2682 v4 @ 2.50GHz (1 Core), Motherboard: Alibaba Cloud ECS, Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 1024 MB RAM, Disk: 40GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: CentOS 7.2.1511, Kernel: 3.10.0-514.6.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: ext3, Screen Resolution: 1024x768, System Layer: KVM Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Server To Client - Duration: 10 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 912.34 |=============================================== Red Hat Virtio device . 909.62 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Send File - Duration: 10 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 910.83 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Send File - Duration: 60 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 851.67 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Send File - Duration: 360 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 843.57 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Request Response - Duration: 10 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 1965.85 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Request Response - Duration: 60 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 1942.33 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: UDP Request Response - Duration: 10 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 2296.27 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: UDP Request Response - Duration: 60 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 1523.56 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Request Response - Duration: 360 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 1614.87 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: UDP Request Response - Duration: 360 Seconds Transaction Rate Per Second > Higher Is Better Red Hat Virtio device . 1577.79 |============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Client To Server - Duration: 10 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 916.13 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Client To Server - Duration: 60 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 852.51 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Server To Client - Duration: 60 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 850.90 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Client To Server - Duration: 360 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 842.22 |=============================================== Netperf 2.7.0 Server: 172.21.147.106 - Test: TCP Stream - Server To Client - Duration: 360 Seconds Megabits/sec Throughput > Higher Is Better Red Hat Virtio device . 841.80 |===============================================