KVMwirtualka QEMU 1.0 testing on Ubuntu 12.04 via the Phoronix Test Suite. KVM: Processor: 40 x QEMU Virtual 1.0 @ 2.80GHz (40 Cores), Motherboard: Bochs, Chipset: Red Hat Virtio, Memory: 177152MB, Disk: 835GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Ubuntu 12.04, Kernel: 3.13.0-32-generic (x86_64), Compiler: GCC 4.6.3, File-System: ext4, System Layer: QEMU 1.0 AIO-Stress 0.21 Phoronix Test Suite v5.0.1 MB/s > Higher Is Better KVM . 2447.40 |================================================================ Threaded I/O Tester 0.3.3 Phoronix Test Suite v5.0.1 MB/s > Higher Is Better KVM . 8081.99 |================================================================ RAMspeed SMP 3.5.0 Average MB/s > Higher Is Better KVM . 19581.55 |=============================================================== SciMark 2.0 Composite Mflops > Higher Is Better KVM . 1266.66 |================================================================ 7-Zip Compression 9.20.1 Compress Speed Test MIPS > Higher Is Better KVM . 70149 |================================================================== Timed Linux Kernel Compilation 3.1 Time To Compile Seconds < Lower Is Better KVM . 29.29 |================================================================== Gzip Compression 2GB File Compression Seconds < Lower Is Better KVM . 13.72 |================================================================== OpenSSL 1.0.1g RSA 4096-bit Performance Signs Per Second > Higher Is Better KVM . 2304.07 |================================================================ Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better KVM . 12498.74 |===============================================================