linux下查看cpu核心数

1.查看物理CPU个数

cat /proc/cpuinfo |grep "physical id"|sort|uniq|wc -l

2.查看每个物理CPU含有的core个数

cat /proc/cpuinfo |grep "cpu cores"|uniq

3.查看逻辑CPU个数(逻辑CPU个数=物理CPU个数*core个数)

cat /proc/cpuinfo |grep "processor"|wc -l