Debian Jessie KVM tuning IDE+NO THP+NO VCPUPIN VirtIO+THP+VCPUPIN: Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 2.40GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 1024 MB RAM QEMU, Disk: 8GB, Graphics: VMware SVGA II, Network: Red Hat Virtio device OS: Debian GNU/Linux 8, Kernel: 3.16.0-4-amd64 (x86_64), Compiler: GCC 4.9.2, File-System: ext4, System Layer: KVM VMware IDE+NO THP+NO VCPUPIN: Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 2.40GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 1024 MB RAM QEMU, Disk: 9GB QEMU HDD, Graphics: VMware SVGA II, Network: Red Hat Virtio device OS: Debian GNU/Linux 8, Kernel: 3.16.0-4-amd64 (x86_64), Compiler: GCC 4.9.2, File-System: ext4, System Layer: KVM VMware AIO-Stress 0.21 Test: Random Write MB/s > Higher Is Better VirtIO+THP+VCPUPIN .... 23.22 |================================================ IDE+NO THP+NO VCPUPIN . 22.45 |============================================== IDE+NO THP+NO VCPUPIN . 22.25 |============================================== IDE+NO THP+NO VCPUPIN . 16.45 |================================== IDE+NO THP+NO VCPUPIN . 16.11 |================================= IDE+NO THP+NO VCPUPIN . 16.47 |================================== x264 2014-08-30 H.264 Video Encoding Frames Per Second > Higher Is Better VirtIO+THP+VCPUPIN .... 24.14 |================================================ IDE+NO THP+NO VCPUPIN . 23.12 |============================================== IDE+NO THP+NO VCPUPIN . 23.54 |=============================================== IDE+NO THP+NO VCPUPIN . 18.75 |===================================== IDE+NO THP+NO VCPUPIN . 19.78 |======================================= IDE+NO THP+NO VCPUPIN . 19.58 |=======================================