zfs KVM testing on CentOS Linux 7 via the Phoronix Test Suite. zfs: Processor: Common KVM @ 2.99GHz (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 34GB QEMU HDD, Graphics: Device 1234:1111, Network: Red Hat Virtio device OS: CentOS Linux 7, Kernel: 3.10.0-693.2.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM Common KVM: Processor: Common KVM @ 2.99GHz (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 28GB, Graphics: Device 1234:1111, Network: Red Hat Virtio device OS: CentOS Linux 7, Kernel: 3.10.0-693.2.2.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 6591.88 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1915.95 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1904.86 |================================================================ IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 6341.64 |================================================================ IOzone 3.465 Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1776.75 |================================================================ IOzone 3.465 Record Size: 4Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1798.67 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 1413.57 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 1505.91 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 1210.67 |================================================================ IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 891.20 |================================================================= IOzone 3.465 Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 928.04 |================================================================= IOzone 3.465 Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 934.24 |================================================================= IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 8534.48 |================================================================ IOzone 3.465 Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1619.58 |================================================================ IOzone 3.465 Record Size: 64Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 1760.44 |================================================================ IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 6158.43 |================================================================ IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better zfs . 5853.44 |================================================================ IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 928.23 |================================================================= IOzone 3.465 Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better zfs . 944.09 |================================================================= John The Ripper 1.8.0 Test: Blowfish Real C/S > Higher Is Better Common KVM . 3710 |============================================================ John The Ripper 1.8.0 Test: Traditional DES Real C/S > Higher Is Better Common KVM . 8575667 |========================================================= John The Ripper 1.8.0 Test: MD5 Real C/S > Higher Is Better Common KVM . 61862 |===========================================================