CentOS中CPU信息主要有两种查看方式及对应格式：
cat /proc/cpuinfo命令：输出为键值对形式，每行一个字段，字段间用冒号分隔，示例：processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 79
model name : Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
stepping : 1
cpu MHz : 4000.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 8
lscpu命令：输出为结构化格式，包含CPU架构、操作模式、核心数、线程数、缓存大小等信息，示例：Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 158
Model name: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
CPU MHz: 2800.000
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 6144K
