We’ll use the cat command to read the file: # cat /proc/cpuinfo processor : 0 The /proc /cpuinfo virtual file contains information about the CPUs currently available in our system’s motherboard. The command will list many files, but we’re only interested in the cpuinfo file, which happens to be inside the base directory. r-r-r- 1 root root 0 Jul 13 00:18 zoneinfo r-r-r- 1 root root 0 Jul 13 00:18 vmstat r-r-r- 1 root root 0 Jul 13 00:18 filesystemsĭr-xr-xr-x 5 root root 0 Jul 13 00:18 fs/ r-r-r- 1 root root 0 Jul 13 00:18 diskstats r-r-r- 1 root root 0 Jul 13 00:14 devices r-r-r- 1 root root 0 Jul 13 00:14 cpuinfo r-r-r- 1 root root 0 Jul 13 00:18 consoles Let’s see what’s inside the /proc directory: # ls -halF /proc total 4.0K We might need root access to read some of the virtual files. On most Linux distributions, virtual files are located in the /proc directory. Unlike a regular file, virtual files don’t take space on the disk and are only created when we read them. So, they’re kind of lenses through which we can peek at the running Linux kernel. By reading virtual files, we can see what the Linux kernel is doing at the moment. >Model name: Intel(R) Core(TM) i5-8350U CPU 1.A virtual file is a special type of file available on Linux-based operating systems. The information will display details like threads,sockets,NUMA (Non-Uniform Memory Access),information about caches and cache sharing,model, bogoMIPS, stepping and byte order. Lscpu fetches the details of system architecture details from sysfs and /proc/cpuinfo. LSCPU method to get CPU information in Linux: Apicid:ĭenotes the number of virtual as given by bios. Shows number of processors attached to the same physical processor. Stands for floating point unit.It’s a part of processor used for floating point calculations.

Tells us the size of temporary storage area that the computer’s processor can retrieve data in much faster way.

Core Id:ĭenotes the number of cores (here we have cores 0-3 i.e. Here processor 0 is on core- 0 and processor 7 is on core-3 (see line core_id).

In case of multiple processors, it will display them sequentially starting from 0. This will display the number of processors on the machine. Let us discuss few important terminology in detail for linux cpu info as below: Processor: Model name : Intel(R) Core(TM) i5-8350U CPU 1.70GHzįlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt aes xsave osxsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushoptĪddress sizes : 39 bits physical, 48 bits virtual There are multiple ways to get the CPU information in LINUX/UNIX environment.įile /proc/cpuinfo will display the CPU information such as processor,CPU cores,cache size etc. As a Basis consultant, we need to monitor the OS performance & get the resource details like CPU information,hardware details etc.

Cat proc cpuinfo virtual address