The sysctl command can be used on a Mac OS X/macOS system to determine some machine dependent (machdep) features, such as Central Processor Unit (CPU) features.  "VMX" stands for Virtual Machine Extensions, which adds 13 new instructions: VMPTRLD, VMPTRST, VMCLEAR, VMREAD, VMWRITE, VMCALL, VMLAUNCH, VMRESUME, VMXOFF, VMXON, INVEPT, INVVPID, and VMFUNC. Cache Memory of CPU: Cache is a small memory contained inside the processor itself to make fast memory access. В 2013-ом году компания Intel предложила решение, которое ускоряет эту технологию. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. CPU feature words refactor (equivalent to) machine-friendly reporting of -cpu enforce/check Actually, the new mechanism is based on the "filtered-features" X86CPU property; Probing for CPU features supported by the host and can be enabled Using "-cpu host" and the "feature-words" property 然而在macOSX系统中，此却命令不可用。不过好在系统提供了另外一个可能的命令 sysctl，如：sysctl machdep.cpu.brand_string 可以查看CPU品牌信息。除了可以使用参数 machdep.cpu.brand_string 查看CPU品牌信息，...操作系统 This is a very old architecture, and is missing some features that could unlock higher CPU performance. Real time measurement of each core's internal frequency, memory frequency. machdep.cpu.features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clfsh ds acpi mmx fxsr sse sse2 ss htt tm pbe sse3 pclmulqdq dtes64 mon dscpl vmx est tm2 ssse3 fma cx16 tpr pdcm sse4.1 sse4.2 x2apic movbe popcnt aes … This is was one of the issues commonly raised by few clients after updating their environments and deployed Virtual Machines CPU Hot Add and Memory Hot Plug features are grayed out in the Virtual Machine settings and were not able to enable them. ANSI and Unicode builds … sysctl -a | grep -E --color 'machdep.cpu.features|VMX' If you see VMX in the output (should be colored), the VT-x feature is enabled in your machine.
Оно стало доступно с архитектуры Haswell и называется VMCS. E.g., the output of sysctl machdep.cpu run on a MacBook Pro (Retina, 15-inch, Mid 2015) system with an Intel Core i7 processor is shown below:
Detect CPU feature using /proc/cpuinfo. Furthermore the number of available CPU's (aka "CPU cores") as well as the CPU vendor (Intel, AMD, other) can be reported. Check the output for any of the Intel virtualisation extensions. It will tell you what CPU type you’re using, but not the exact model number. Passthrough of advanced CPU features for macOS [High] Sierra guests When emulating macOS on Proxmox, it seems that we are forced to set the guest’s CPU type to “Penryn”. CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels. CPU Extension Descriptions OpenCL™ Runtime and Compiler for Intel® Processor Graphics Intel implementation of the OpenCL™ standard provides support for the following optional features on the Intel CPU OpenCL device. Для второй ОС – sysctl machdep.cpu.features.  Memory type, size, timings, and module specifications (SPD). Offering multiple CPU cores, robust cache, fast communication with memory and input/output, these features work in parallel to create a responsive PC experience. Dismiss Join GitHub today. machdep.cpu.leaf7_features: SMEP ERMS RDWRFSGS TSC_THREAD_OFFSET BMI1 AVX2 BMI2 INVPCID As you can notice, the results include AVX2, and therefore, the configuration includes support for Intel AVX2 and you can use the necessary compiler options to generate code that takes advantage of this powerful instruction set. It fetches information from the main memory and sends it to CPU for processing.
The sysctl command can be used on a Mac OS X/macOS system to determine some machine dependent (machdep) features, such as Central Processor Unit (CPU) features. Runtime CPU feature detection scenarios.
This very simple plug-in can detect the supported CPU features (MMX, 3DNow!, SSEx, AVXx, FMAx, etc) at runtime. Parsing /proc/cpuinfo is Template:AMD x86 CPU features. sysctl -a | grep machdep.cpu.features If you see AVX1.0 in the list then your Mac has AVX.
I will describe them in detail below. sysctl -a | grep machdep.cpu.features.