cloudimg KVM testing on Ubuntu 16.04 via the Phoronix Test Suite. aiostress01: Processor: Intel Core 2 Duo P9xxx @ 3.00GHz (1 Core), Motherboard: OpenStack Foundation Nova v16.0.3 (1.10.2-1ubuntu1~cloud0 BIOS), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 39GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-116-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, System Layer: KVM aiostress02: Processor: Intel Core 2 Duo P9xxx @ 3.00GHz (1 Core), Motherboard: OpenStack Foundation Nova v16.0.3 (1.10.2-1ubuntu1~cloud0 BIOS), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 39GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-116-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, System Layer: KVM AIO-Stress 0.21 Test: Random Write MB/s > Higher Is Better aiostress01 . 12.83 |============= aiostress02 . 55.44 |==========================================================