patrik-dufresne KVM testing on Debian 8.7 via the Phoronix Test Suite. Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC: Processor: Common KVM @ 2.40GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 2048MB, Disk: 32GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Debian 8.7, Kernel: 3.16.0-4-amd64 (x86_64), Compiler: GCC 4.9.2, File-System: ext4, System Layer: KVM test-kvm-raw-writeback: Processor: Common KVM @ 2.40GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 2048MB, Disk: 32GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Debian 8.7, Kernel: 3.16.0-4-amd64 (x86_64), Compiler: GCC 4.9.2, File-System: ext4, System Layer: KVM SQLite 3.8.10.2 Test Target: Default Test Directory Seconds < Lower Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 1460.15 |============== test-kvm-raw-writeback ............................... 1532.31 |=============== 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 . 815.96 |============== test-kvm-raw-writeback ............................... 956.79 |================ 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 . 782.52 |================ test-kvm-raw-writeback ............................... 794.10 |================ Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better Common KVM - Cirrus Logic GD 5446 - QEMU Standard PC . 6160.10 |=============== test-kvm-raw-writeback ............................... 6180.45 |=============== Flexible IO Tester 2.1.13 Type: Random Write - IO Engine: Sync - Buffered: No - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory - Result: MB/s MB/s > Higher Is Better test-kvm-raw-writeback . 22.97 |===============================================