linux系统查看cpu核数

> lscpu

Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
Address sizes:       36 bits physical, 48 bits virtual
CPU(s):              8 // 8个逻辑CPU
On-line CPU(s) list: 0-7
Thread(s) per core:  2 // 每一个核心2个线程，因此物理CPU有4核
Core(s) per socket:  4
Socket(s):           1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               60
Model name:          Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
Stepping:            3
CPU MHz:             3601.000
CPU max MHz:         3601.0000
BogoMIPS:            7202.00
Virtualization:      VT-x
Hypervisor vendor:   Windows Subsystem for Linux
Virtualization type: container
Flags:               fpu vme de pse tsc msr pae mce cx8 apic