Physical id #相同表示為同一個物理CPU
Processor #邏輯CPU
Cpu cores #CPU核數,內核個數
Core id #內核id號
Siblings #每個物理CPU里面的邏輯CPU個數
[root@localhost ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
[root@localhost ~]#
[root@localhost ~]# cat /proc/cpuinfo | grep "physical id" | sort -u | wc -l
8
[root@localhost ~]#
[root@localhost ~]# cat /proc/cpuinfo | grep "processor" | wc -l
8
[root@localhost ~]#
[root@localhost ~]# cat /proc/cpuinfo | grep "cpu cores" | uniq
cpu cores : 1
[root@localhost ~]#
[root@localhost ~]# cat /proc/cpuinfo | grep "siblings" | uniq
siblings : 1
[root@localhost ~]#
邏輯CPU > 物理CPU x CPU核數 #開啟超線程
邏輯CPU = 物理CPU x CPU核數 #沒有開啟超線程或不支持超線程
[root@localhost ~]# cat /proc/cpuinfo | grep -e "cpu cores" -e "siblings" | sort | uniq
cpu cores : 1
siblings : 1
[root@localhost ~]#
說明:如果cpu cores數量和siblings數量一致,則沒有啟用超線程,否則超線程被啟用。
[root@localhost sh]# vi cpu.sh
#!/bin/bash
cpuname=$(cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c)
physical=$(cat /proc/cpuinfo | grep "physical id" | sort -u | wc -l)
processor=$(cat /proc/cpuinfo | grep "processor" | wc -l)
cpucores=$(cat /proc/cpuinfo | grep "cpu cores" | uniq)
siblings=$(cat /proc/cpuinfo | grep "siblings" | uniq)
echo "* * * * * CPU Information * * * * *"
echo "(CPU型號)cpu name : $cpuname"
echo "(物理CPU個數)physical id is : $physical"
echo "(邏輯CPU個數)processor is : $processor"
echo "(CPU內核數)cpu cores is : $cpucores"
echo "(單個物理CPU的邏輯CPU數)siblings is : $siblings"
[root@localhost sh]#
[root@localhost sh]# sh cpu.sh
* * * * * CPU Information * * * * *
(CPU型號)cpu name : 8 Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
(物理CPU個數)physical id is : 8
(邏輯CPU個數)processor is : 8
(CPU內核數)cpu cores is : cpu cores : 1
(單個物理CPU的邏輯CPU數)siblings is : siblings : 1
[root@localhost sh]#
[root@localhost sh]# uname -a
Linux localhost.localdomain 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost sh]#
說明:i386 i686為32位;x86_64為64位