#Bash return proc cpuinfo 64 Bit#
#Bash return proc cpuinfo Patch#
#Bash return proc cpuinfo code#

You can simply view the information of your system CPU by viewing the contents of the /proc/cpuinfo file with the help. With that said, below are 9 commands for getting info about your Linux CPU. We can change the period by modifying the value after the -n option. Essentially, the /proc/cpuinfo contains this all info, every other command/utility gets its output from this file. The above output will refresh every second. Model name : Intel(R) Core(TM) i7-7500U CPU 2.70GHz As you can see, all you have to do is use the Linux cat command on a special file on your Linux system. The date that this will be published is July 4th. If we want to monitor the speed for some period of time, we can use the watch command: $ watch -n1 'grep Hz /proc/cpuinfo'Įvery 1.0s: grep Hz /proc/cpuinfo baeldung: Sun Jun 26 16:21:32 2022 To see what type of processor/CPU your computer system has, use this Linux command: cat /proc/cpuinfo. Its a short and sweet process, though Ill show you a couple of ways to process the output. asynchronously at the /proc/cpuinfo open time, add a single delay > upfront (if necessary) at that point and simply compute the current > frequency while running showcpuinfo() for each individual CPU. In this example, the clock rates are the same for both cores.

So, it means that there are two cores in this particular system that gives the above output. I use a command like this: testlocalhost:> cat /proc/cpuinfo processor : 0 vendorid : AuthenticAMD cpu family : 23 model : 1 model name : AMD RySix-Core Processor stepping : 1 microcode : 0x8001138 cpu MHz : 1376.637 cache size : 512 KB physical id : 0 siblings : 12 core id : 0 cpu cores : 6 apicid : 0 initial apicid : 0 fpu : yes fpuexception : yes cpuid level : 13 wp : yes. In this case, these values are 2.70 GHz and 2904.004 MHz, respectively.įurthermore, the reason there are two outputs is that this file displays CPU information for each processor core. To check the current clock dmidecode | grep 'Current Speed' should do the trick.Īnother thing that could impact the performance of your processor is the cpu governor you are using.Model name : Intel(R) Core(TM) i7-7500U CPU 2.70GHzĪs we mentioned previously, there are base and real-time clock speeds. Every Linux operating system has at least one shell, and most have several. If you want to check your processor max clock, just type cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq. The shell is a program which actually processes commands and returns output.

Hardware : HiKey Development Board is self explanatory.

proc/cpuinfo This is a collection of CPU and system architecture. Linux has a command to retrieve detailed CPU information using cat /proc/cpuinfo.Using this command, users can get CPU and CPUs core information like below.

#Bash return proc cpuinfo Patch#

CPU revision: Indicates patch release or 'minor revision'. A readlink(2) call on this file under Linux 2.0 returns a string in the format.CPU variant : Indicates the variant number of the processor, or 'major revision'.

#Bash return proc cpuinfo 64 Bit#

CPU architecture: AArch64 means 64 bit ARM board:.WARN_TAINT_ONCE(diff, TAINT_CPU_OUT_OF_SPEC, * Mismatched CPU features are a recipe for disaster. Features are evaluated by cpuinfo code, and only show if all cores support them /* All Serialized cores are shown in list with line breaks instead of separated processors. This is the expected output to Arm based processors. 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. Processor : AArch64 Processor rev 3 (aarch64)įeatures : fp asimd evtstrm aes pmull sha1 sha2 crc32 The kernel data Linux exposes in /proc/cpuinfo will show each logical CPU with a unique processor number. It does not look quite right to me because I used to seeing cpu information present for each core (something like shown in Number of processors in /proc/cpuinfo).ĭoes the output of /proc/cpuinfo indicate a problem with the board or its configuration? Or is this output expected with some dev boards?ĪRM Cortex A53 (octa-core): $ cat /proc/cpuinfo I also noticed a cat of /proc/cpuinfo is returning something that does not look quite right, but I'm not sure if its cause for concern. I observed the self tests are running a little slower than expected, so I'm mildly investigating it. Linux hikey 3.18.0-linaro-hikey #1 SMP PREEMPT Mon Nov 30 00:11: The board provides two Cortex-A53 processors, provides eight cores, and uses Linaro Linux: $ uname -a I purchased it for testing a couple of libraries on ARM64 cpu architecture.

#Bash return proc cpuinfo code#

I have a LeMaker HiKey development board. Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux kernel and other low-level projects in C/C++ (bootloaders, C libraries.