qaz KVM testing on Ubuntu 16.04 via the Phoronix Test Suite. ubuntu: Processor: 2 x Westmere E56xx/L56xx/X56xx (Nehalem-C) @ 2.41GHz (2 Cores), Motherboard: OpenStack Foundation Nova v15.0.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 39GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-83-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, System Layer: KVM ubuntu5: Processor: Westmere E56xx/L56xx/X56xx @ 2.41GHz (1 Core), Motherboard: OpenStack Foundation Nova v15.0.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 512 MB RAM QEMU, Disk: 10GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 16.04, Kernel: 4.4.0-83-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: ext4, System Layer: KVM PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better ubuntu .. 3555 |=============================================================== ubuntu5 . 258 |===== t-test1 2017-01-13 Threads: 1 Seconds < Lower Is Better ubuntu .. 29.66 |============================================================== ubuntu5 . 27.09 |========================================================= t-test1 2017-01-13 Threads: 2 Seconds < Lower Is Better ubuntu .. 9.53 |=================================== ubuntu5 . 16.88 |============================================================== 7-Zip Compression 9.20.1 Compress Speed Test MIPS > Higher Is Better ubuntu . 4614 |================================================================ NGINX Benchmark 1.0.11 Static Web Page Serving Requests Per Second > Higher Is Better ubuntu .. 15481.29 |=========================================================== ubuntu5 . 8619.09 |=================================