GLIBC Oracle VirtualBox testing on Ubuntu 16.04 via the Phoronix Test Suite. Intel Core i7-7900X: Processor: Intel Core i7-7900X @ 3.31GHz (20 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 12288MB, Disk: 43GB VBOX HDD, Graphics: LLVMpipe, Audio: Intel 82801AA AC 97 Audio, Monitor: VBOX monitor, Network: Intel 82540EM Gigabit OS: Ubuntu 16.04, Kernel: 4.8.0-58-generic (x86_64), Desktop: Unity 7.4.0, Display Server: X Server 1.18.4, Display Driver: modesetting 1.18.4, OpenGL: 3.3 Mesa 12.0.6 Gallium 0.4 (LLVM 3.8 256 bits), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 3840x1960, System Layer: Oracle VirtualBox glibc bench 1.0 Benchmark: ffs nanoseconds < Lower Is Better Intel Core i7-7900X . 4.89 |=================================================== glibc bench 1.0 Benchmark: sqrt nanoseconds < Lower Is Better Intel Core i7-7900X . 13.95 |================================================== glibc bench 1.0 Benchmark: tanh nanoseconds < Lower Is Better Intel Core i7-7900X . 129.26 |================================================= glibc bench 1.0 Benchmark: ffsll nanoseconds < Lower Is Better Intel Core i7-7900X . 5.71 |=================================================== glibc bench 1.0 Benchmark: pthread_once nanoseconds < Lower Is Better Intel Core i7-7900X . 5.66 |===================================================