Linux查看CPU个数

一 查看cpu型号

root@localhost:~# grep name  /proc/cpuinfo | sort | uniq
model name      : Intel Core Processor (Broadwell, no TSX)      

二 查看物理CPU个数

root@localhost:~# grep "physical id" /proc/cpuinfo | sort | uniq | wc -l
1      

三 查看CPU核数

root@localhost:~# grep "core id" /proc/cpuinfo | sort | uniq | wc -l
2      

四 查看CPU线程数

root@localhost:~# grep "processor" /proc/cpuinfo | sort | uniq | wc -l
4      

五 lscpu命令

root@locaohost:~# lscpu
Architecture:                    x86_64  #架构 
CPU op-mode(s):                  32-bit, 64-bit  
Byte Order:                      Little Endian
Address sizes:                   46 bits physical, 48 bits virtual
CPU(s):                          4  #逻辑cpu颗数
On-line CPU(s) list:             0-3 #在线的cpu数量
Thread(s) per core:              2 #每个核心线程
Core(s) per socket:              2 #每个cpu插槽核数/每颗物理cpu核数
Socket(s):                       1 #cpu插槽数 
NUMA node(s):                    1
Vendor ID:                       GenuineIntel #cpu厂商ID 
CPU family:                      6
Model:                           61 #型号
Model name:                      Intel Core Processor (Broadwell, no TSX)
Stepping:                        2 #步进 
CPU MHz:                         2194.916 #cpu主频 
BogoMIPS:                        4389.83
Hypervisor vendor:               KVM
Virtualization type:             full #cpu支持的虚拟化技术
L1d cache:                       64 KiB #cpu的L1数据缓存
L1i cache:                       64 KiB #cpu的L1指令缓存
L2 cache:                        8 MiB #二级缓存
L3 cache:                        16 MiB #三级缓存
NUMA node0 CPU(s):               0-3