Linux查看物理CPU个数、核数、逻辑CPU个数#一般情况下使用root或者oracle用户查都可以。
# 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
[oracle@enmo ~]$ cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
0
--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
[oracle@enmo ~]$ cat /proc/cpuinfo| grep "processor"| wc -l
1
[oracle@enmo ~]$
--查看CPU信息（型号）
[oracle@enmo ~]$ cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
1 Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
[oracle@enmo ~]$
--查看内 存信息
[oracle@enmo ~]$ cat /proc/meminfo
MemTotal: 2035908 kB
MemFree: 1544564 kB
Buffers: 31728 kB
Cached: 299544 kB
SwapCached: 0 kB
Active: 89152 kB
Inactive: 293792 kB
Active(anon): 54944 kB
Inactive(anon): 396 kB
Active(file): 34208 kB
Inactive(file): 293396 kB
Unevictable: 4444 kB
Mlocked: 4444 kB
SwapTotal: 4192956 kB
SwapFree: 4192956 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 56116 kB
Mapped: 30028 kB
Shmem: 528 kB
Slab: 75504 kB
SReclaimable: 29204 kB
SUnreclaim: 46300 kB
KernelStack: 992 kB
PageTables: 6800 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 5210908 kB
Committed_AS: 180624 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 157976 kB
VmallocChunk: 34359574176 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 8192 kB
DirectMap2M: 2088960 kB
DirectMap1G: 0 kB
[oracle@enmo ~]$
