iozone_all KVM testing on Ubuntu 16.04 via the Phoronix Test Suite. iozone_all: Processor: 8 x Intel Xeon E3-12xx v2 (Ivy Bridge) @ 2.70GHz (8 Cores), Motherboard: OpenStack Foundation Nova v13.1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 32768MB, Disk: 194GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-53-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, System Layer: KVM IOzone 3.405 Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better iozone_all . 2722.64 |========================================================= IOzone 3.405 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better iozone_all . 4185.39 |========================================================= IOzone 3.405 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better iozone_all . 33.49 |=========================================================== IOzone 3.405 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better iozone_all . 47.37 |=========================================================== IOzone 3.405 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better iozone_all . 4426.71 |========================================================= IOzone 3.405 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better iozone_all . 37.73 |===========================================================