io-file-r-w KVM QEMU 1.5.3 testing on Ubuntu 22.04 via the Phoronix Test Suite. QEMU HDD: Processor: 8 x QEMU Virtual 1.5.3 (8 Cores), Motherboard: Red Hat KVM (0.5.1 BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 16 GB RAM, Disk: 54GB QEMU HDD, Graphics: Cirrus Logic GD 5446, Network: Realtek RTL-8100/8101L/8139 OS: Ubuntu 22.04, Kernel: 5.15.0-60-generic (x86_64), Vulkan: 1.3.255, Compiler: GCC 11.4.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM QEMU 1.5.3 IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 1082.97 |=========================================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 0.94 |==============================================================