Linux下如何查询物理CPU、逻辑CPU的个数？

主要是通过查询文件/proc/cpuinfo获取，可以通过脚本一次性查询所有信息：

#!/bin/bash

 

physicalNumber=0

coreNumber=0

logicalNumber=0

HTNumber=0

 

logicalNumber=$(grep "processor" proc/cpuinfo|sort -u|wc -l)

physicalNumber=$(grep "physical id" /proc/cpuinfo|sort -u|wc -l)

coreNumber=$(grep "cpu cores" /proc/cpuinfo|uniq|awk -F':' '{print $2}'|xargs)

HTNumber=$((logicalNumber / (physicalNumber * coreNumber)))

 

echo "****** CPU Information ******"

echo "Logical CPU Number  : ${logicalNumber}"

echo "Physical CPU Number : ${physicalNumber}"

echo "CPU Core Number     : ${coreNumber}"

echo "HT Number           : ${HTNumber}"

 

echo "*****************************"

结果如下：

[root@rhel6lhr ~]# vi c.sh

[root@rhel6lhr ~]# sh c.sh

****** CPU Information ******

Logical CPU Number  : 2

Physical CPU Number : 1

CPU Core Number     : 2

HT Number           : 1

*****************************