Linux如何查看机器的配置信息

Linux如何查看机器的配置信息

1、查看内存信息

cat /proc/meminfo
[root@web ~]#  cat /proc/meminfo
MemTotal:       98806896 kB
MemFree:          361144 kB
MemAvailable:   84982828 kB
Buffers:              16 kB
Cached:         82564292 kB
SwapCached:       344296 kB
Active:         52803312 kB
Inactive:       42283548 kB
Active(anon):   10701468 kB
Inactive(anon):  1934460 kB
Active(file):   42101844 kB
Inactive(file): 40349088 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:      12582904 kB
SwapFree:        8850104 kB
Dirty:                52 kB
Writeback:             0 kB
AnonPages:      12189656 kB
Mapped:            24380 kB
Shmem:            113320 kB
Slab:            2606308 kB
SReclaimable:    2508600 kB
SUnreclaim:        97708 kB
KernelStack:        7312 kB
PageTables:        35004 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    61986352 kB
Committed_AS:   79488824 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      488288 kB
VmallocChunk:   34308113404 kB
HardwareCorrupted:     0 kB
AnonHugePages:   8826880 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      113660 kB
DirectMap2M:     5101568 kB
DirectMap1G:    97517568 kB
[root@web ~]# 

二、核心数计算说明

# 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
[root@web ~]# cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
2
[root@web ~]#

# 查看每个物理CPU中core的个数(即核数)
cat /proc/cpuinfo| grep "cpu cores"| uniq
[root@web ~]# cat /proc/cpuinfo| grep "cpu cores"| uniq
cpu cores       : 8
[root@web ~]#

# 查看逻辑CPU的个数
cat /proc/cpuinfo| grep "processor"| wc -l
[root@web ~]# cat /proc/cpuinfo| grep "processor"| wc -l
32
[root@web ~]# 

三、查看CPU信息（型号）

# 查看CPU信息（型号）
cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
[root@web ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
     32  Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz
[root@web ~]#