Linux View CPU count, number of cores, logical CPU number

Physical CPU: The physical CPU is relative to the virtual CPU concept, refers to the actual existence of the processor, is that we can see, the touch of the CPU, is inserted in the motherboard above.

Physical Core: The number of physical cores that are included in the CPU, such as the dual-core CPUs we normally call, single-core CPUs. In the entry for the/proc/cpuinfo file below the Linux system: 1. How many different physical IDs have a physical CPU. 2.CPU cores records how many physical cores the corresponding physical CPU (identified by the physical ID in the entry) is, and now most of the standalone PCs we use are dual-core CPUs.logical CPU (logical core): In the entry for the/proc/cpuinfo file, siblings records the number of logical cores that correspond to the physical CPU (identified by the physical ID in the entry). # total number of cores = number of physical CPUs x number of cores per physical CPU # Total Logical CPUs = number of physical CPUs x number of cores per physical CPU X number of hyper-threads

# View the number of physical CPUs cat/proc/cpuinfo| grep "Physical ID" | Sort| uniq| wc-l# See the number of cores in each physical CPU (that is, the number of nuclei) cat/proc/cpuinfo| grep "CPU Cores" | uniq# View the number of logical CPUs cat/proc/cpuinfo| grep "Processor" | wc-l# View CPU Model Cat/proc/cpuinfo | grep name | Cut-f2-d: | Uniq-c

　　

Linux View CPU count, number of cores, logical CPU number