aio-virtio-blk-directsync-cache-mode 4 x AMD Opteron 23xx (Gen 3 Class Opteron) testing with a QEMU Standard PC (i440FX + PIIX 1996) and Cirrus Logic GD 5446 on Ubuntu 14.04 via the Phoronix Test Suite. virtio-blk-directsync-cache-mode: Processor: 4 x AMD Opteron 23xx (Gen 3 Class Opteron) @ 2.30GHz (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 6144 MB RAM, Disk: 16GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 800x600 AIO-Stress 0.21 Test: Random Write MB/s > Higher Is Better virtio-blk-directsync-cache-mode . 43.58 |=====================================