Linux系统查看硬件配置

以CentOS系统为例
一、CPU
cat /proc/cpuinfo
如下是我的CPU信息，有4个信息，说明有4个逻辑CPU，但是每个physical id相同，说明只有1个物理CPU。
1、多个逻辑CPU的”physical id”和”core id”均相同，说明开启了超线程。
2、flags中有lm标记，说明是64位的CPU
3、我的processor有4个不同的编号，并且同属于一个physical id，同时cpu cores 的值为1，这也就说明了我的CPU是单核心的，并且核心上有4个逻辑处理器。
所以，我的机器CPU是Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz型号，1个64位物理CPU，单核4线程。

processor   : 0vendor_id   : GenuineIntelcpu family  : 6model       : 62model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHzstepping    : 4microcode   : 1046cpu MHz     : 2600.058cache size  : 20480 KBphysical id : 12siblings    : 1core id     : 0cpu cores   : 1apicid      : 12initial apicid  : 12fpu     : yesfpu_exception   : yescpuid level : 13wp      : yesflags       : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes f16c rdrand hypervisor lahf_lm ida arat pln pts dts fsgsbase ermsbogomips    : 5200.11clflush size    : 64cache_alignment : 64address sizes   : 46 bits physical, 48 bits virtualpower management:processor   : 1vendor_id   : GenuineIntelcpu family  : 6model       : 62model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHzstepping    : 4microcode   : 1046cpu MHz     : 2600.058cache size  : 20480 KBphysical id : 12siblings    : 1core id     : 0cpu cores   : 1apicid      : 12initial apicid  : 12fpu     : yesfpu_exception   : yescpuid level : 13wp      : yesflags       : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes f16c rdrand hypervisor lahf_lm ida arat pln pts dts fsgsbase ermsbogomips    : 5200.11clflush size    : 64cache_alignment : 64address sizes   : 46 bits physical, 48 bits virtualpower management:processor   : 2vendor_id   : GenuineIntelcpu family  : 6model       : 62model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHzstepping    : 4microcode   : 1046cpu MHz     : 2600.058cache size  : 20480 KBphysical id : 12siblings    : 1core id     : 0cpu cores   : 1apicid      : 12initial apicid  : 12fpu     : yesfpu_exception   : yescpuid level : 13wp      : yesflags       : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes f16c rdrand hypervisor lahf_lm ida arat pln pts dts fsgsbase ermsbogomips    : 5200.11clflush size    : 64cache_alignment : 64address sizes   : 46 bits physical, 48 bits virtualpower management:processor   : 3vendor_id   : GenuineIntelcpu family  : 6model       : 62model name  : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHzstepping    : 4microcode   : 1046cpu MHz     : 2600.058cache size  : 20480 KBphysical id : 12siblings    : 1core id     : 0cpu cores   : 1apicid      : 12initial apicid  : 12fpu     : yesfpu_exception   : yescpuid level : 13wp      : yesflags       : fpu de tsc msr pae cx8 sep cmov pat clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes f16c rdrand hypervisor lahf_lm ida arat pln pts dts fsgsbase ermsbogomips    : 5200.11clflush size    : 64cache_alignment : 64address sizes   : 46 bits physical, 48 bits virtualpower management:

二、内存
cat /proc/meminfo
如下是我的内存信息，总内存3.7G，剩余约380M

MemTotal:        3974056 kBMemFree:          390724 kBBuffers:           27460 kBCached:            98616 kBSwapCached:        43080 kBActive:          2634864 kBInactive:         692540 kBActive(anon):    2584488 kBInactive(anon):   618872 kBActive(file):      50376 kBInactive(file):    73668 kBUnevictable:           0 kBMlocked:               0 kBSwapTotal:       3145724 kBSwapFree:              0 kBDirty:                32 kBWriteback:             0 kBAnonPages:       3159036 kBMapped:            15320 kBShmem:              2032 kBSlab:              97000 kBSReclaimable:      18188 kBSUnreclaim:        78812 kBKernelStack:        4816 kBPageTables:       101172 kBNFS_Unstable:          0 kBBounce:                0 kBWritebackTmp:          0 kBCommitLimit:     5132752 kBCommitted_AS:    9925672 kBVmallocTotal:   34359738367 kBVmallocUsed:       18008 kBVmallocChunk:   34359719108 kBHardwareCorrupted:     0 kBAnonHugePages:         0 kBHugePages_Total:       0HugePages_Free:        0HugePages_Rsvd:        0HugePages_Surp:        0Hugepagesize:       2048 kBDirectMap4k:     4194304 kBDirectMap2M:           0 kB

三、硬盘
1、查看硬盘和分区
lsblk

NAME                        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTxvda                        202:0    0   30G  0 disk ├─xvda1                     202:1    0  500M  0 part /boot└─xvda2                     202:2    0 29.5G  0 part   ├─VolGroup-lv_root (dm-0) 253:0    0 26.5G  0 lvm  /  └─VolGroup-lv_swap (dm-1) 253:1    0    3G  0 lvm  [SWAP]