Following are the command can be used to get the details of Linux CPU

lscpu — This command will explain the details of CPU and CORES

# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 64
On-line CPU(s) list: 0-63
Thread(s) per core: 1
Core(s) per socket: 64
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 26
Stepping: 4
CPU MHz: 2400.000
BogoMIPS: 4800.00
Hypervisor vendor: VMware
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0-63

cat /proc/cpuinfo

processor : 62
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU E5-4657L v2 @ 2.40GHz
stepping : 4
microcode : 1064
cpu MHz : 2400.000
cache size : 30720 KB
physical id : 0
siblings : 64
core id : 62
cpu cores : 64
apicid : 62
initial apicid : 62
fpu : yes
fpu_exception : yes
cpuid level : 11
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 ht syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 x2apic popcnt hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 4800.00
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:

processor : 63
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU E5-4657L v2 @ 2.40GHz
stepping : 4
microcode : 1064
cpu MHz : 2400.000
cache size : 30720 KB
physical id : 0
siblings : 64
core id : 63
cpu cores : 64
apicid : 63
initial apicid : 63
fpu : yes
fpu_exception : yes
cpuid level : 11
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 ht syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 x2apic popcnt hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 4800.00
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: