d1 Xen 4.2.amazon Hypervisor testing on Ubuntu 14.04 via the Phoronix Test Suite. instance4: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (4 Cores), Memory: 8192MB, Disk: 8GB, Graphics: NVIDIA GeForce GT 640M OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), OpenGL: 1.4, Compiler: GCC 4.8, File-System: ext4, System Layer: Xen 4.2.amazon Hypervisor instance4b: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (4 Cores), Memory: 8192MB, Disk: 8GB, Graphics: NVIDIA GeForce GT 640M OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), OpenGL: 1.4, Compiler: GCC 4.8, File-System: ext4, System Layer: Xen 4.2.amazon Hypervisor instance4c: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (4 Cores), Memory: 8192MB, Disk: 8GB, Graphics: NVIDIA GeForce GT 640M OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), OpenGL: 1.4, Compiler: GCC 4.8, File-System: ext4, System Layer: Xen 4.2.amazon Hypervisor instance4d: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (4 Cores), Memory: 8192MB, Disk: 8GB, Graphics: NVIDIA GeForce GT 640M OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), OpenGL: 1.4, Compiler: GCC 4.8, File-System: ext4, System Layer: Xen 4.2.amazon Hypervisor instance4e: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (4 Cores), Memory: 8192MB, Disk: 8GB, Graphics: NVIDIA GeForce GT 640M OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), OpenGL: 1.4, Compiler: GCC 4.8, File-System: ext4, System Layer: Xen 4.2.amazon Hypervisor IOzone 3.405 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better instance4 .. 7852.69 |======================================================== instance4b . 7931.47 |========================================================= instance4c . 7189.30 |==================================================== instance4d . 7870.03 |========================================================= instance4e . 7732.82 |========================================================