fio0725224GBRAM KVM testing on Ubuntu 22.04 via the Phoronix Test Suite. QEMU HDD: Processor: AMD EPYC-Rome (4 Cores / 8 Threads), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (0.0.0 BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 4096MB, Disk: 107GB QEMU HDD, Graphics: llvmpipe, Network: Red Hat Virtio device OS: Ubuntu 22.04, Kernel: 5.15.0-41-generic (x86_64), Desktop: KDE Plasma 5.24.4, Display Server: X Server 1.21.1.3, OpenGL: 4.5 Mesa 22.0.1 (LLVM 13.0.1 256 bits), Vulkan: 1.2.204, Compiler: GCC 11.2.0, File-System: ext4, Screen Resolution: 1600x900, System Layer: KVM Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: No - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better QEMU HDD . 41.7 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: No - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better QEMU HDD . 10668 |============================================================= Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better QEMU HDD . 38.3 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better QEMU HDD . 9791 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better QEMU HDD . 33.8 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better QEMU HDD . 8642 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better QEMU HDD . 38.4 |============================================================== Flexible IO Tester 3.29 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better QEMU HDD . 9818 |==============================================================