Disk_BENCH KVM testing on CentOS Linux 7 via the Phoronix Test Suite. disk_benchmark: Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 3.39GHz (2 Cores), Motherboard: Red Hat KVM, Memory: 1 x 2048 MB RAM, Disk: 8GB, Audio: QEMU ID 22 OS: CentOS Linux 7, Kernel: 3.10.0-327.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM DISK_BENCHMARK: Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 3.39GHz (2 Cores), Motherboard: Red Hat KVM, Memory: 1 x 2048 MB RAM, Disk: 8GB, Audio: QEMU ID 22 OS: CentOS Linux 7, Kernel: 3.10.0-327.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM AIO-Stress 0.21 Test: Random Write MB/s > Higher Is Better disk_benchmark . 28.95 |======================================================= DISK_BENCHMARK . 28.19 |======================================================