test1 KVM testing on Ubuntu 18.04 via the Phoronix Test Suite. 4k 512MB rw elevator=noop: Processor: Intel Xeon E5-2620 v3 @ 2.40GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 12GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 18.04, Kernel: 4.15.0-72-generic (x86_64), File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better 4k 512MB rw elevator=noop . 5076.57 |========================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better 4k 512MB rw elevator=noop . 210.44 |===========================================