kvm-Network-Loopback1 QEMU testing on CentOS 6.7 via the Phoronix Test Suite. Red Hat Virtio device: Processor: 12 x QEMU Virtual (cpu64-rhel6) @ 2.67GHz (12 Cores), Motherboard: Red Hat KVM, Chipset: Red Hat Virtio, Memory: 16384 MB + 16384 MB + 16384 MB + 16384 MB + 7155 MB RAM, Disk: 7GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: CentOS 6.7, Kernel: 2.6.32-573.8.1.el6.centos.plus.x86_64 (x86_64), Compiler: GCC 4.4.7 20120313, File-System: ext4, System Layer: QEMU Loopback TCP Network Performance CPU Frequency Monitor Megahertz < Lower Is Better Red Hat Virtio device . MIN: 2665 AVG: 2665 MAX: 2665 Loopback TCP Network Performance Memory Usage Monitor Megabytes < Lower Is Better Red Hat Virtio device . MIN: 713 AVG: 714 MAX: 714