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环境为1块双核心2GCPU
[root@mail ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz
stepping : 7
microcode : 4294967295
cpu MHz : 2199.976
cache size : 20480 KB
physical id : 0 #物理计算,一块CPU
siblings : 2
core id : 0 #逻辑计算,第一个核心
cpu cores : 2
apicid : 0
initial apicid : 0
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 mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good xtopology unfair_spinlock pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 popcnt aes xsave avx hypervisor lahf_lm xsaveopt pti retpoline
bogomips : 4399.95
clflush size : 64
cache_alignment : 64
address sizes : 44 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz
stepping : 7
microcode : 4294967295
cpu MHz : 2199.976
cache size : 20480 KB
physical id : 0 #物理计算,一块CPU
siblings : 2
core id : 1 #逻辑计算,第二个核心
cpu cores : 2
apicid : 1
initial apicid : 1
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 mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good xtopology unfair_spinlock pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 popcnt aes xsave avx hypervisor lahf_lm xsaveopt pti retpoline
bogomips : 4399.95
clflush size : 64
cache_alignment : 64
address sizes : 44 bits physical, 48 bits virtual
power management:
[root@mail ~]# cat /proc/cpuinfo |grep "physical id"
physical id : 0
physical id : 0
如下直观计算
- 物理CPU
[root@mail ~]# cat /proc/cpuinfo |grep "physical id"
physical id : 0
physical id : 0
计算机计数从0开始,故此,这里的查询结果为1,也就是一块物理CPU
- 逻辑CPU
[root@mail ~]# cat /proc/cpuinfo |grep "core id"
core id : 0
core id : 1
[root@mail ~]# cat /proc/cpuinfo |grep "core id"|wc -l
2
统计获得共计2个核心