Disk-performance-iozone-proxmox qemu testing on Ubuntu 16.04 via the Phoronix Test Suite. QEMU HDD: Processor: Common KVM @ 2.79GHz (1 Core), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 34GB QEMU HDD, Graphics: Device 1234:1111, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-185-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: 2GB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 8969.72 |=========================================================== IOzone 3.465 Record Size: 2MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 8375.24 |=========================================================== IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 2468.42 |=========================================================== IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 61.03 |============================================================= IOzone 3.465 Record Size: 2MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 148.11 |============================================================ IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 0.60 |============================================================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 8474.61 |=========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 8.71 |==============================================================