proxmox qemu testing on Debian 9.9 via the Phoronix Test Suite. xen-lvm: Processor: Intel Xeon E5645 (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.11.2-0-gf9626ccb91-prebuilt.qemu-project.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 512 MB RAM QEMU, Disk: 34GB QEMU HDD, Graphics: bochsdrmfb, Network: Intel 82540EM OS: Debian 9.9, Kernel: 4.9.0-9-amd64 (x86_64), Compiler: GCC 6.3.0 20170516, File-System: ext4, Screen Resolution: 1024x768, System Layer: qemu IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better xen-lvm . 59.48 |============================================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better xen-lvm . 63.02 |============================================================== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better xen-lvm . 69.12 |============================================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better xen-lvm . 43.17 |============================================================== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better xen-lvm . 41.93 |============================================================== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better xen-lvm . 94.44 |==============================================================