linux下如何查看服务器的硬件配置信息

性能测试时一定要确定测试环境和的硬件配置、软件版本配置，保证和线上一致，才更接近真实环境。

那么linux下如何查看服务器的硬件配置信息？？

一、查看cpu信息

1、所有信息 lscpu

[root@redis02 ~]#  lscpu
Architecture:          x86_64  ##cpu架构
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                8       ##总共有8核
On-line CPU(s) list:   0-7
Thread(s) per core:    1   ##每个cpu核，只能支持一个线程，即不支持超线程
Core(s) per socket:    8    ##每个cpu，有8个核
Socket(s):             1       ##总共有1一个cpu
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 79
Model name:            Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
Stepping:              1
CPU MHz:               2095.139
BogoMIPS:              4190.27
Hypervisor vendor:     Microsoft
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              20480K
NUMA node0 CPU(s):     0-7

2、查看逻辑cpu的数量

cat /proc/cpuinfo |grep "processor"|sort -u|wc -l

3、查看物理cpu的数量

grep "physical id" /proc/cpuinfo|sort -u|wc -l 

4、查看每个物理cpu的内核数

grep "cpu cores" /proc/cpuinfo|uniq

5、每个物理CPU上逻辑CPU个数

grep "siblings" /proc/cpuinfo|uniq

6、判断是否开启了抄超线程：

如果多个逻辑CPU的"physical id"和"core id"均相同，说明开启了超线程

或者换句话说

 逻辑CPU个数 > 物理CPU个数 * CPU内核数   开启了超线程

 逻辑CPU个数 = 物理CPU个数 * CPU内核数   没有开启超线程

二、查看内存信息

1、free -m

[root@redis02 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:         16071       8041       8029          0        143       6487
-/+ buffers/cache:       1411      14659
Swap:         8039         36       8003

2、查看内存详细信息   cat /proc/meminfo

[root@redis02 ~]# cat /proc/meminfo
MemTotal:       16456948 kB
MemFree:         8222176 kB
Buffers:          146532 kB
Cached:          6643084 kB
SwapCached:         3200 kB
Active:          6315476 kB
Inactive:        1478136 kB
Active(anon):     338812 kB
Inactive(anon):   665832 kB
Active(file):    5976664 kB
Inactive(file):   812304 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       8232956 kB
SwapFree:        8195644 kB
Dirty:                16 kB
Writeback:             0 kB
AnonPages:       1001364 kB
Mapped:            14560 kB
Shmem:               648 kB
Slab:             283984 kB
SReclaimable:     221920 kB
SUnreclaim:        62064 kB
KernelStack:        5472 kB
PageTables:         5952 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    16461428 kB
Committed_AS:     752588 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       65856 kB
VmallocChunk:   34359659968 kB
HardwareCorrupted:     0 kB
AnonHugePages:    962560 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       14272 kB
DirectMap2M:    16762880 kB