phoronix-test-suite benchmark iozone 2 x Intel Xeon E5-2620 v2 testing with a OpenStack Foundation Nova v2014.2 and Red Hat QXL paravirtual graphic card on Ubuntu 14.04 via the Phoronix Test Suite. phoronix-test-suite benchmark iozone: Processor: 2 x Intel Xeon E5-2620 v2 @ 2.10GHz (2 Cores), Motherboard: OpenStack Foundation Nova v2014.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 40GB, Graphics: Red Hat QXL paravirtual graphic card, Network: Red Hat Virtio device OS: Ubuntu 14.04, Kernel: 3.13.0-45-generic (x86_64), Compiler: GCC 4.8.2, File-System: ext4 IOzone 3.405 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better phoronix-test-suite benchmark iozone . 4490.48 |=============================== IOzone 3.405 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better phoronix-test-suite benchmark iozone . 71.18 |=================================