iozone-all-4g-rw QEMU 1.5.0 testing on Debian 7.3 via the Phoronix Test Suite. linux-direct: Processor: QEMU Virtual 1.5.0 @ 2.00GHz (4 Cores), Motherboard: Bochs, Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM, Disk: 13GB Virtual Disk, Graphics: Cirrus Logic GD 5446, Audio: Intel 82801FB/FBM/FR/FW/FRW, Network: Red Hat Virtio device OS: Debian 7.3, Kernel: 3.12.0 (i686), Compiler: GCC 4.7, File-System: ext4, System Layer: QEMU 1.5.0 IOzone 3.405 Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better linux-direct . 37.32 |========================================================= IOzone 3.405 Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better linux-direct . 38.35 |========================================================= IOzone 3.405 Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better linux-direct . 16.72 |========================================================= IOzone 3.405 Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better linux-direct . 16.93 |========================================================= IOzone 3.405 Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better linux-direct . 37.64 |========================================================= IOzone 3.405 Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better linux-direct . 17.01 |=========================================================