查看linux的cpu核数

1.查看逻辑CPU个数：
#cat /proc/cpuinfo |grep "processor"|sort -u|wc -l
24
2.由于有超线程技术有必要查看一下物理CPU个数：
#grep "physical id" /proc/cpuinfo|sort -u|wc -l
2
#grep "physical id" /proc/cpuinfo|sort -u
physical id : 0
physical id : 1
查看每个物理CPU内核个数：
#grep "cpu cores" /proc/cpuinfo|uniq
cpu cores : 6
每个物理CPU上逻辑CPU个数：
#grep "siblings" /proc/cpuinfo|uniq
siblings : 12