linux查看CPU个数

1. 查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l

2. 查看逻辑CPU的个数
#cat /proc/cpuinfo |grep "processor"|wc -l

3. 查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq

4. 查看CPU的主频
#cat /proc/cpuinfo |grep MHz|uniq