a2 A OS comparison via the Phoronix Test Suite. trusty: Processor: 4 x Intel Core 2 Duo T7700 @ 2.40GHz (4 Cores), Motherboard: OpenStack Foundation Nova v2013.1.5, Memory: 8192MB, Disk: 10GB OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Compiler: GCC 4.8.2, File-System: ext4 jessie: Processor: 4 x Intel Core 2 Duo T7700 @ 2.40GHz (4 Cores), Motherboard: OpenStack Foundation Nova v2013.1.5, Memory: 8192MB, Disk: 10GB OS: Debian Linux Jessie/sid, Kernel: 3.13.0-24-generic (x86_64), Compiler: GCC 4.8.2, File-System: ext4 jessie-wudev: Processor: 4 x Intel Core 2 Duo T7700 @ 2.40GHz (4 Cores), Motherboard: OpenStack Foundation Nova v2013.1.5, Memory: 8192MB, Disk: 10GB OS: Debian Linux Jessie/sid, Kernel: 3.13.0-24-generic (x86_64), Compiler: GCC 4.8.2, File-System: ext4 Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better trusty ....... 3582.78 |=============================================== jessie ....... 4223.07 |======================================================= jessie-wudev . 4121.80 |======================================================