[xxx@localhost ~]$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4 #总处理器核心数量
On-line CPU(s) list: 0-3
Thread(s) per core: 1 #每个核心支持的线程数量。1表示只支持一个线程,即不支持超线程
Core(s) per socket: 1 #每个处理器的核心数量
Socket(s): 4 #处理器数量
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Stepping: 0
CPU MHz: 2599.998
BogoMIPS: 5199.99
Hypervisor vendor: VMware #管理程序供应商
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0-3
总处理器核心数量=处理器数量*每个处理器的核心数量*每个核心支持的线程数量。即:CPU(s) = Socket(s) * Core(s) * Thread(s)。
我们看一下MAN中是如何描述的:
[xxx@localhost ~]$ man lscpu
COLUMNS
CPU The logical CPU number of a CPU as used by the Linux kernel. #逻辑CPU数量
CORE The logical core number. A core can contain several CPUs. #逻辑核心数量
SOCKET The logical socket number. A socket can contain several cores. #逻辑插槽(路)数量
2. cat /proc/cpuinfo:查看CPU详细信息
[xxx@localhost ~]$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
stepping : 0
cpu MHz : 2599.998
cache size : 30720 KB
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
stepping : 0
cpu MHz : 2599.998
cache size : 30720 KB
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
stepping : 0
cpu MHz : 2599.998
cache size : 30720 KB
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz
stepping : 0
cpu MHz : 2599.998
cache size : 30720 KB
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
这样输出的话,内容有些多,看起来会有些混乱。我们可以用几条命令来查看我们想要知道的信息: