iscsi-jan17 KVM testing on Ubuntu 20.04 via the Phoronix Test Suite. Default: Processor: Common KVM (8 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: 2 x Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-62-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM defaults: Processor: Common KVM (8 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: 2 x Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-62-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better Default . 3409.27 |============================================================ IOzone 3.465 Record Size: 2MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better Default . 3138.75 |============================================================ Flexible IO Tester 3.25 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: No - Block Size: 256KB - Disk Target: Default Test Directory MB/s > Higher Is Better defaults . 487 |=============================================================== Flexible IO Tester 3.25 Type: Random Read - Engine: IO_uring - Buffered: Yes - Direct: No - Block Size: 256KB - Disk Target: Default Test Directory IOPS > Higher Is Better defaults . 2595 |==============================================================