linux shell 查看物理cpu个数 核数 逻辑cpu个数_shell怎么查看机器上有多少个cpu

shell命令如下：

# 总核数 = 物理CPU个数 X 每颗物理CPU的核数 
# 总逻辑CPU数 = 物理CPU个数 X 每颗物理CPU的核数 X 超线程数
 
# 查看物理CPU个数
cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
 
# 查看每个物理CPU中core的个数(即核数)
cat /proc/cpuinfo| grep "cpu cores"| uniq
 
# 查看逻辑CPU的个数
cat /proc/cpuinfo| grep "processor"| wc -l
 
#查看CPU信息（型号）
cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
 
#查看内 存信息
cat /proc/meminfo

运行结果如下：

[root@localhost ~]# cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
2
[root@localhost ~]# cat /proc/cpuinfo| grep "cpu cores"| uniq
cpu cores       : 2
[root@localhost ~]# cat /proc/cpuinfo| grep "processor"| wc -l
4
[root@localhost ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
      4  Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
[root@localhost ~]# cat /proc/meminfo
MemTotal:        7990024 kB
MemFree:         4886992 kB
MemAvailable:    5253736 kB
Buffers:               0 kB
Cached:           588880 kB
SwapCached:         5916 kB
Active:          1297368 kB
Inactive:        1323160 kB
Active(anon):     991488 kB
Inactive(anon):  1071196 kB
Active(file):     305880 kB
Inactive(file):   251964 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       8388604 kB
SwapFree:        8364028 kB
Dirty:                48 kB
Writeback:             0 kB
AnonPages:       2028412 kB
Mapped:           238144 kB
Shmem:             31028 kB
Slab:             206856 kB
SReclaimable:      60640 kB
SUnreclaim:       146216 kB
KernelStack:       26976 kB
PageTables:        47232 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    12383616 kB
Committed_AS:   18943888 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      227252 kB
VmallocChunk:   34359277564 kB
Percpu:            68608 kB
HardwareCorrupted:     0 kB
AnonHugePages:   1044480 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      167744 kB
DirectMap2M:     6123520 kB
DirectMap1G:     4194304 kB