disk-linode-check KVM testing on CentOS Linux 7 via the Phoronix Test Suite. disk-linode: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (1 Core), Memory: 1024MB, Disk: 24GB OS: CentOS 6.6, Kernel: 3.18.5-x86_64-linode52 (x86_64), Compiler: GCC 4.4.7 20120313, File-System: ext4, System Layer: Xen 4.4.2-rc1 Hypervisor disk-provider: Processor: Intel Xeon E312xx @ 2.30GHz (1 Core), Motherboard: OpenStack Foundation Nova v2015.1.2, Memory: 1 x 2048 MB RAM QEMU, Disk: 20GB OS: CentOS Linux 7, Kernel: 3.10.0-229.14.1.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM s1-2: Processor: 2 x Intel Core (Haswell no TSX) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v12.0.3, Memory: 1 x 2048 MB RAM QEMU, Disk: 60GB OS: CentOS Linux 7, Kernel: 3.10.0-327.18.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM disk-provider-ns-noopt: Processor: 2 x Intel Xeon E5-2670 v3 @ 3.10GHz (48 Cores), Motherboard: Dell 0H21J3, Chipset: Intel Xeon E7 v3/Xeon, Memory: 8 x 16384 MB DDR4-2133MHz, Disk: 4 x 199GB PERC H730 Mini + 600GB PERC H730 Mini + 4796GB PERC H730 Mini, Graphics: Matrox s G200eR2, Network: Broadcom NetXtreme II BCM57800 1/10 OS: Ubuntu 16.04, Kernel: 4.4.0-21-generic (x86_64), Compiler: GCC 5.3.1 20160413, File-System: ext4, Screen Resolution: 640x480 Intel Core #1: Processor: 2 x Intel Core (Haswell no TSX) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v14.0.0, Memory: 1 x 4096 MB RAM, Disk: 40GB OS: CentOS Linux 7, Kernel: 3.10.0-327.18.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM provider-bootstack-06Jul: Processor: 2 x Intel Xeon E312xx (Sandy Bridge) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v2015.1.4, Memory: 1 x 4096 MB RAM QEMU, Disk: 40GB OS: CentOS Linux 7, Kernel: 3.10.0-229.14.1.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM provider-bootstack-070716-10u: Processor: 2 x Intel Xeon E312xx (Sandy Bridge) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v2015.1.4, Memory: 1 x 4096 MB RAM QEMU, Disk: 40GB OS: CentOS Linux 7, Kernel: 3.10.0-229.14.1.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM provider-bootstack-080716-8u-migrate-n2: Processor: 2 x Intel Xeon E312xx (Sandy Bridge) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v2015.1.4, Memory: 1 x 4096 MB RAM QEMU, Disk: 40GB OS: CentOS Linux 7, Kernel: 3.10.0-229.14.1.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM Intel Core #2: Processor: 2 x Intel Core (Haswell no TSX) @ 2.30GHz (2 Cores), Motherboard: OpenStack Foundation Nova v14.0.0, Memory: 1 x 4096 MB RAM, Disk: 40GB OS: CentOS Linux 7, Kernel: 3.10.0-327.18.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM Intel Xeon E312xx: Processor: 2 x Intel Xeon E312xx (Sandy Bridge) @ 2.20GHz (2 Cores), Motherboard: OpenStack Foundation Nova v12.0.4, Memory: 1 x 2048 MB RAM QEMU, Disk: 80GB OS: CentOS Linux 7, Kernel: 3.10.0-327.28.3.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM tiny: Processor: 2 x Intel Xeon E312xx (Sandy Bridge) @ 2.00GHz (2 Cores), Motherboard: OpenStack Foundation Nova v15.0.3, Memory: 6144MB, Disk: 8GB, Graphics: cirrusdrmfb OS: CentOS Linux 7, Kernel: 3.10.0-229.14.1.el7.x86_64 (x86_64), File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM Gzip Compression 2GB File Compression Seconds < Lower Is Better disk-linode ............................. 23.03 |= disk-provider ........................... 22.51 |= s1-2 .................................... 17.76 |= disk-provider-ns-noopt .................. 12.78 |= Intel Core #1 ........................... 18.13 |= provider-bootstack-06Jul ................ 18.15 |= provider-bootstack-070716-10u ........... 18.26 |= provider-bootstack-080716-8u-migrate-n2 . 19.31 |= Intel Core #2 ........................... 18.04 |= Intel Xeon E312xx ....................... 684.47 |============================= tiny .................................... 22.25 |=