2xvdev-nfs-cache KVM testing on Ubuntu 18.04 via the Phoronix Test Suite. QEMU HDD: Processor: Common KVM @ 2.93GHz (1 Core), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 34GB QEMU HDD, Graphics: Device 1234:1111, Network: Red Hat Virtio device OS: Ubuntu 18.04, Kernel: 4.15.0-112-generic (x86_64), File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 2MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better QEMU HDD . 2329.78 |=========================================================== IOzone 3.465 Record Size: 2MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better QEMU HDD . 53.41 |=============================================================