rweight2u6 qemu testing on Ubuntu 16.04 via the Phoronix Test Suite. Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC: Processor: Common KVM @ 3.47GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 29GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-31-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 800x600, System Layer: qemu IOzone 3.405 Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 58.14 |================= IOzone 3.405 Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 95.45 |================= IOzone 3.405 Record Size: 1MB - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 87.93 |================= IOzone 3.405 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 100.65 |================ IOzone 3.405 Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 98.27 |================= IOzone 3.405 Record Size: 4Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 97.14 |================= IOzone 3.405 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 86.51 |================= IOzone 3.405 Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 76.69 |================= IOzone 3.405 Record Size: 1MB - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 76.23 |================= IOzone 3.405 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 85.48 |================= IOzone 3.405 Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 87.39 |================= IOzone 3.405 Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 87.56 |================= IOzone 3.405 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 91.02 |================= IOzone 3.405 Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 89.03 |================= IOzone 3.405 Record Size: 64Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 98.14 |================= IOzone 3.405 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 3231.92 |=============== IOzone 3.405 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 2360.78 |=============== IOzone 3.405 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 85.63 |================= IOzone 3.405 Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 85.80 |================= IOzone 3.405 Record Size: 64Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 86.74 |================= IOzone 3.405 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 83.48 |================= IOzone 3.405 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 81.35 |================= IOzone 3.405 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 3346.70 |=============== IOzone 3.405 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 83.24 |=================