iozone-Proxmox-1mb qemu testing on Ubuntu 16.04 via the Phoronix Test Suite. QEMU HDD: Processor: Common KVM @ 2.40GHz (8 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 107GB QEMU HDD, Graphics: Device 1234:1111, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-143-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 800x600, System Layer: qemu IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 4532.68 |=========================================================== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 140.70 |============================================================