io_read 4 x Intel Xeon E312xx (Sandy Bridge) testing with a OpenStack Foundation Nova v2014.1 and Red Hat QXL paravirtual graphic card on Ubuntu 14.04 via the Phoronix Test Suite. io_read_n1: Processor: 4 x Intel Xeon E312xx (Sandy Bridge) @ 2.00GHz (4 Cores), Motherboard: OpenStack Foundation Nova v2014.1, Chipset: Intel 440FX- 82441FX PMC, Memory: 16384MB, Disk: 50GB, Graphics: Red Hat QXL paravirtual graphic card, Network: Red Hat Virtio device OS: Ubuntu 14.04, Kernel: 3.13.0-52-generic (x86_64), Compiler: GCC 4.8.2, File-System: ext4 Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: Sync - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: IOPS IOPS > Higher Is Better io_read_n1 . 314 |============================================================= Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: Sync - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: MB/s MB/s > Higher Is Better io_read_n1 . 329.23 |========================================================== Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: IOPS IOPS > Higher Is Better io_read_n1 . 1146 |============================================================ Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: MB/s MB/s > Higher Is Better io_read_n1 . 1156.93 |========================================================= Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: POSIX AIO - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: IOPS IOPS > Higher Is Better io_read_n1 . 312 |============================================================= Flexible IO Tester 2.1.13 Type: Random Read - IO Engine: POSIX AIO - Buffered: No - Direct: Yes - Block Size: 1MB - Disk Target: Default Test Directory - Result: MB/s MB/s > Higher Is Better io_read_n1 . 326.15 |==========================================================