linux 性能

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中core的个数(即核数)
cat /proc/cpuinfo| grep "cpu cores"| uniq

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