But can any one tell why the cpu MHz of a core is 1600MHz? I guess there is 2 threads in a core, so a hw thread freq may be about the half of the core's? How this number is calculated? processor : 7 It will be 8 logic core in a system, like what shows in /proc/cpuinfo. Version: Intel(R) Core(TM) i7-3770 CPU 3.40GHz using top and htop To find out how many many cpus there are look at the cpuinfo file in /proc (cat it out or open in vim): For our lab machines, you can see a. Here is the results for Code: processor : 0 vendorid : AuthenticAMD cpu family : 6 model : 10 model name : AMD Athlon (tm) XP 2500+ stepping : 0 cpu. Everyone who is running Linux is welcome to: cat /proc/cpuinfo. Here is the dmidecode output: # dmidecode -t 4 Here is a chance for Linux users to easily compare Linux CPU info and some meaningless BOGOMIPS. There are obviously many more commands to get the CPU info, some of which are not available by default and need to be installed separately.The CPU is a It has 4 cores and each core has 2 threads.
BASH RETURN PROC CPUINFO HOW TO
In this article, we have seen how to check the CPU information in a Linux system. There is less information in this output than ‘ lscpu‘ and the list of ‘ capabilities‘ is the same as the ‘ flags‘ listed in the output of lscpu. Note that even though we are just reading the information, this command is recommended to be run as super-user, i.e. We can use this command with the argument '-c CPU' to get a short output containing information about the CPU. The lshw stands for ‘ list hardware‘ and it’s a command to get information about all the hardware used by the Linux system. You can also save this output to a file by simply redirecting the output. proc/cpuinfo This is a collection of CPU and system architecture. For example, you can output the data in ‘JSON’ format using the option '-J'. A readlink(2) call on this file under Linux 2.0 returns a string in the format. Example of linux CentOS server with 2 vCPU : rootcentos62 cat /proc/cpuinfo grep processor processor : 0 processor : 1. This command has some useful options as well. here is my query return of 'cat /proc/cpuinfo' processor : 3 vendorid : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Xeon. Command lscpuįirst, let us check out the simple command ‘lscpu’ which prints the information in a neat and more readable format. > Forums > Linux Forums > Linux - Hardware: proc/cpuinfo question User Name: Remember Me Password: Linux - Hardware This forum is for Hardware issues. to send to parent thread on exit taskcpu which CPU the task is scheduled on. Apart from reading this file, there are few inbuilt commands which you can run to get the CPU information. Thanks to everybody else who contributed source or docs to the Linux kernel. This will output the contents on the command line, and you can press ‘Enter’ to scroll down. You can also view the contents of this file directly on the command line by running: $ less /proc/cpuinfo $ vim /proc/cpuinfoĪs you can see in the screenshot above, all the information like the model name, speed, cache size, is present in the file. We must look at the siblings, CPU cores and core id to tell the difference. A logical CPU can be a hyperthreading sibling, a shared core in a dual or quad core, or a separate physical CPU. c: The naming override can be, which means it will not appear in /proc/cpuinfo.
If, for some reason, the naming of X86FEATUREOpen the file /proc/cpuinfo using a text editor of your choice. The kernel data Linux exposes in /proc/cpuinfo will show each logical CPU with a unique processor number. For instance, /proc/cpuinfo is a userspace interface and must remain constant. In Linux, CPU information is stored in a system file, which can be either read using a text editor, or it can be read and used in an administrative shell script. The CPU Information in any machine includes information about the processor, the vendor details, model name, architecture, speed of processing, etc.
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