Postmark and CPU Ubuntu without LUKS Oracle VirtualBox testing on Ubuntu 16.04 via the Phoronix Test Suite. Postmark and CPU Ubuntu without LUKS: Processor: Intel Core i7-5557U @ 3.10GHz (1 Core), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 4096MB, Disk: 33GB VBOX HDD, Graphics: LLVMpipe, Audio: Intel 82801AA AC 97 Audio, Monitor: VBOX monitor, Network: Intel 82540EM Gigabit OS: Ubuntu 16.04, Kernel: 4.10.0-28-generic (x86_64), Desktop: Unity 7.4.0, Display Driver: modesetting 1.19.3, OpenGL: 3.3 Mesa 17.0.7 Gallium 0.4 (LLVM 4.0 256 bits), Compiler: GCC 5.4.0 20160609, File-System: ext4, Screen Resolution: 1280x685, System Layer: Oracle VirtualBox PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better Postmark and CPU Ubuntu without LUKS . 5213 |================================== PostMark 1.51 CPU Usage (Summary) Monitor Percent < Lower Is Better Postmark and CPU Ubuntu without LUKS . MIN: 4 AVG: 98 MAX: 100