How to check the number of CPU and cores in Linux system

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# Total number of cores = number of physical CPU X number of cores per physical CPU

# Total logical CPU = number of physical CPU X number of cores per physical CPU X number of super threads

Check the number of physical CPU cat / proc/cpuinfo | grep "physical id" | sort | uniq | wc-l

Check the number of core (that is, number of cores) cat / proc/cpuinfo in each physical CPU | grep "cpu cores" | uniq

Check the number of logical CPU cat / proc/cpuinfo | grep "processor" | wc-l

View CPU information (model number)

Cat / proc/cpuinfo | grep name | cut-f2-d: | uniq-c

View memory information

# cat / proc/meminfo

What is Linux system Linux is a free-to-use and free-spread UNIX-like operating system, is a POSIX-based multi-user, multi-task, multi-threaded and multi-CPU operating system, using Linux can run major Unix tools, applications and network protocols.

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