I’ll introduce commands to check CPU core count on Linux.
Quickly check just CPU core count
$ nproc
4
$ getconf _NPROCESSORS_ONLN
4
$ cat /proc/cpuinfo | grep -c "processor"
4
Check CPU core count and processor count in detail
Check processor count
$ cat /proc/cpuinfo | grep processor
processor : 0
processor : 1
processor : 2
processor : 3
Check physical CPU count
$ cat /proc/cpuinfo | grep "physical id"
physical id : 0
physical id : 1
physical id : 2
physical id : 3
CPU core count for each physical CPU
$ cat /proc/cpuinfo | grep "cpu cores"
cpu cores : 1
cpu cores : 1
cpu cores : 1
cpu cores : 1
That’s all from the Gemba where I wanted to check CPU core count.