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:
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#!/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
*****************************
来源:https://www.cnblogs.com/flish/p/5433779.html