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):        -bit, -bit
Byte Order:            Little Endian
CPU(s):                       ##总共有8核
On-line CPU(s) list:   -
Thread(s) per core:       ##每个cpu核，只能支持一个线程，即不支持超线程
Core(s) per socket:        ##每个cpu，有8个核
Socket(s):                    ##总共有1一个cpu
NUMA node(s):
Vendor ID:             GenuineIntel
CPU family:
Model:
Model name:            Intel(R) Xeon(R) CPU E5- v4 @ .10GHz
Stepping:
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):     -

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:
-/+ buffers/cache:
Swap:                         

2、查看内存详细信息   cat /proc/meminfo

[root@redis02 ~]# cat /proc/meminfo
MemTotal:        kB
MemFree:          kB
Buffers:           kB
Cached:           kB
SwapCached:          kB
Active:           kB
Inactive:         kB
Active(anon):      kB
Inactive(anon):    kB
Active(file):     kB
Inactive(file):    kB
Unevictable:            kB
Mlocked:                kB
SwapTotal:        kB
SwapFree:         kB
Dirty:                 kB
Writeback:              kB
AnonPages:        kB
Mapped:             kB
Shmem:                kB
Slab:              kB
SReclaimable:      kB
SUnreclaim:         kB
KernelStack:         kB
PageTables:          kB
NFS_Unstable:           kB
Bounce:                 kB
WritebackTmp:           kB
CommitLimit:     kB
Committed_AS:      kB
VmallocTotal:    kB
VmallocUsed:        kB
VmallocChunk:    kB
HardwareCorrupted:      kB
AnonHugePages:     kB
HugePages_Total:
HugePages_Free:
HugePages_Rsvd:
HugePages_Surp:
Hugepagesize:        kB
DirectMap4k:        kB
DirectMap2M:     kB