sqlite only aio=native first run: Processor: QEMU Virtual 0.14.1 @ 2.67GHz (2 Cores), Motherboard: Bochs, Chipset: Red Hat Virtio, Memory: 1 x 10240 MB RAM, Disk: 10GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 11.10, Kernel: 3.0.0-13-virtual (x86_64), Display Driver: cirrus, Compiler: GCC 4.6.1, File-System: ext4, System Layer: QEMU on host: Processor: Intel Xeon W3520 @ 2.67GHz (8 Cores), Motherboard: Supermicro X8STi v2.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 4096 MB + 4096 MB + 4096 MB + 4096 MB + 4096 MB + 4096 MB + 4096 kB 1333MHz, Disk: 2 x 40GB INTEL SSDSA2CT04 + 2 x 2000GB Western Digital WDC WD2002FAEX-0, Graphics: Matrox MGA G200eW WPCM450, Network: Intel 82574L Gigabit Connection OS: Ubuntu 11.10, Kernel: 3.0.0-13-server (x86_64), Display Driver: matrox, Compiler: GCC 4.6.1, File-System: ext4 SQLite 3.7.3 Test Target: Default Test Directory Seconds < Lower Is Better first run . 49.41 |============================================================ on host ... 33.21 |========================================