ia64: Intel Itanium Architecture 64-bit (not to be confused with Intel's 64-bit x86 architecture with flag x86-64 or "AMD64" bit indicated by flag lm).tm: Automatic clock control (Thermal Monitor).acpi: ACPI via MSR (temperature monitoring and clock speed modulation).dts: Debug Store (buffer for debugging and profiling instructions).cmov: CMOV instructions (conditional move) (also FCMOV).pge: Page Global Enable (global bit in PDEs and PTEs).cx8: CMPXCHG8 instruction (64-bit compare-and-swap).pae: Physical Address Extensions (support for more than 4GB of RAM).msr: Model-Specific Registers (RDMSR, WRMSR).pse: Page Size Extensions (4MB memory pages).fpu: Onboard FPU (floating point support).See also Wikipedia and table 2-27 in Intel Advanced Vector Extensions Programming Reference Intel-defined CPU features, CPUID level 0x00000001 (edx)
#Cat proc cpuinfo virtual address full#
The full listing is in the kernel source, in the file arch/x86/include/asm/cpufeatures.h. Most of the other features are only of interest to compiler or kernel authors. a hypervisor (announced as such)? hypervisor.Hardware virtualization (VMX/AMD-V)? vmx (Intel), svm (AMD).In other words, your workstation, laptop or server.) FAQ: Do I have… Htop version 3 displays the CPU frequency next to its usage.(32-bit a.k.a.
#Cat proc cpuinfo virtual address install#
$ sudo apt-get install -y linux-tools-$(uname -r) The kernel support can be enabled/disabled using the /sys/devices/system/cpu/cpufreq/boost file. You can disable the Turbo Boost using the BIOS or some Linux options/commands. Here, the CPU will be at the nominal/minimal value (1.20Ghz) all the time. Note the difference when you run the same command with Turbo Boost disabled: In the boost state support section, the values for Supported and Active are no. You may find the technical information of these frequencies at the Intel website. Note that the information states the hardware limits ( 1.20 GHz - 3.47 GHz), the possible frequencies ( 3.47 GHz, 3.33 GHz, 2.53 GHz, 1.87 GHz, 1.20 GHz) and the current frequency ( 1.87 GHz). $ cpupower frequency-infoĬPUs which run at the same hardware frequency: 0ĬPUs which need to have their frequency coordinated by software: 0Īvailable frequency steps: 3.47 GHz, 3.33 GHz, 2.53 GHz, 1.87 GHz, 1.20 GHzĪvailable cpufreq governors: conservative, ondemand, userspace, powersave, performanceĬurrent policy: frequency should be within 1.20 GHz and 3.47 GHz. For instance, for an old Intel Core i5-660 with Turbo Boost enabled, you will get the following. To determine if the Turbo Boost is activated and which is the current frequency, you can use cpupower frequency-info. If Turbo Boost is enabled and all the cores are working, the CPU will work at 2.10GHz.When Turbo Boost is enabled and only one of the cores is working, the CPU will work at a maximum of 3.30GHz.
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