cat /proc/cpuinfo

lscpu

**查看物理CPU个数**：
cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l

**查看每个物理CPU的核数**：
cat /proc/cpuinfo | grep "cpu cores" | uniq

**查看逻辑CPU个数**：
cat /proc/cpuinfo | grep "processor" | wc -l

**检测是否启用超线程**：
cat /proc/cpuinfo | grep -e "cpu cores" -e "siblings" | sort | uniq

lscpu详解：

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                8
On-line CPU(s) list:   0-7
Thread(s) per core:    2
Core(s) per socket:    4
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 142
Model name:            Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
Stepping:              9
CPU MHz:               800.000
CPU max MHz:           4500.0000
CPU min MHz:           400.0000
BogoMIPS:              8388.60
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              8192K
NUMA node0 CPU(s):     0-7