查看逻辑CPU个数：


#cat /proc/cpuinfo |grep "processor"|sort -u|wc -l

24


 


查看物理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


 


判断是否开启了抄超线程：


如果多个逻辑CPU的"physical id"和"core id"均相同，说明开启了超线程


或者换句话说


 逻辑CPU个数 > 物理CPU个数 * CPU内核数 开启了超线程


 逻辑CPU个数 = 物理CPU个数 * CPU内核数 没有开启超线程


 


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 "*****************************"


执行结果：


#./cpuinfo

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

Logical CPU Number : 24

Physical CPU Number : 2

CPU Core Number : 6

HT Number : 2

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