1.查看邏輯CPU個(gè)數(shù)：

#cat /proc/cpuinfo |grep "processor"|sort -u|wc -l
24

2.由于有超線程技術(shù)有必要查看一下物理CPU個(gè)數(shù)：
#grep "physical id" /proc/cpuinfo|sort -u|wc -l
2
#grep "physical id" /proc/cpuinfo|sort -u
physical id : 0
physical id : 1

查看每個(gè)物理CPU內(nèi)核個(gè)數(shù)：
#grep "cpu cores" /proc/cpuinfo|uniq
cpu cores : 6

每個(gè)物理CPU上邏輯CPU個(gè)數(shù)：
#grep "siblings" /proc/cpuinfo|uniq
siblings : 12

判斷是否開啟了抄超線程：
如果多個(gè)邏輯CPU的"physical id"和"core id"均相同，說明開啟了超線程
或者換句話說
邏輯CPU個(gè)數(shù) > 物理CPU個(gè)數(shù) *?CPU內(nèi)核數(shù) 開啟了超線程
邏輯CPU個(gè)數(shù) = 物理CPU個(gè)數(shù) *?CPU內(nèi)核數(shù) 沒有開啟超線程

相關(guān)知識延伸閱讀：
一次性查詢所有信息：
#!/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 "*****************************"

執(zhí)行結(jié)果：
#./cpuinfo
****** CPU Information ******
Logical CPU Number : 24
Physical CPU Number : 2
CPU Core Number : 6
HT Number : 2