io KVM testing on CentOS 7.5.1804 via the Phoronix Test Suite. Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack: Processor: Intel Xeon Gold 6151 @ 3.00GHz (4 Cores), Motherboard: OpenStack Foundation Nova, Memory: 1 x 8192 MB RAM QEMU, Disk: 40GB, Graphics: cirrusdrmfb OS: CentOS 7.5.1804, Kernel: 3.10.0-1160.6.1.el7.x86_64 (x86_64), Compiler: GCC 8.3.1 20190311, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 10.47 |======================= Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 2678 |======================== Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 118 |========================= Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 30300 |======================= Flexible IO Tester 3.25 Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 120 |========================= Flexible IO Tester 3.25 Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 30733 |======================= Flexible IO Tester 3.25 Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 118 |========================= Flexible IO Tester 3.25 Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better Intel Xeon Gold 6151 - cirrusdrmfb - OpenStack . 30300 |=======================