以CentOS系統為例
一、CPU
cat /proc/cpuinfo
如下是我的CPU信息，有4個信息，說明有4個邏輯CPU，但是每個physical id相同，說明只有1個物理CPU。
1、多個邏輯CPU的”physical id”和”core id”均相同，說明開啟了超線程。
2、flags中有lm標記，說明是64位的CPU
3、我的processor有4個不同的編號，並且同屬於一個physical id，同時cpu cores 的值為1，這也就說明了我的CPU是單核心的，並且核心上有4個邏輯處理器。
所以，我的機器CPU是Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz型號，1個64位物理CPU，單核4線程。
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping : 4
microcode : 1046
cpu MHz : 2600.058
cache size : 20480 KB
physical id : 12
siblings : 1
core id : 0
cpu cores : 1
apicid : 12
initial apicid : 12
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : 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 erms
bogomips : 5200.11
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping : 4
microcode : 1046
cpu MHz : 2600.058
cache size : 20480 KB
physical id : 12
siblings : 1
core id : 0
cpu cores : 1
apicid : 12
initial apicid : 12
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : 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 erms
bogomips : 5200.11
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping : 4
microcode : 1046
cpu MHz : 2600.058
cache size : 20480 KB
physical id : 12
siblings : 1
core id : 0
cpu cores : 1
apicid : 12
initial apicid : 12
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : 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 erms
bogomips : 5200.11
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
stepping : 4
microcode : 1046
cpu MHz : 2600.058
cache size : 20480 KB
physical id : 12
siblings : 1
core id : 0
cpu cores : 1
apicid : 12
initial apicid : 12
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : 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 erms
bogomips : 5200.11
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
二、內存
cat /proc/meminfo
如下是我的內存信息，總內存3.7G，剩余約380M
MemTotal: 3974056 kB
MemFree: 390724 kB
Buffers: 27460 kB
Cached: 98616 kB
SwapCached: 43080 kB
Active: 2634864 kB
Inactive: 692540 kB
Active(anon): 2584488 kB
Inactive(anon): 618872 kB
Active(file): 50376 kB
Inactive(file): 73668 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 3145724 kB
SwapFree: 0 kB
Dirty: 32 kB
Writeback: 0 kB
AnonPages: 3159036 kB
Mapped: 15320 kB
Shmem: 2032 kB
Slab: 97000 kB
SReclaimable: 18188 kB
SUnreclaim: 78812 kB
KernelStack: 4816 kB
PageTables: 101172 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 5132752 kB
Committed_AS: 9925672 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 18008 kB
VmallocChunk: 34359719108 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 4194304 kB
DirectMap2M: 0 kB
三、硬盤
1、查看硬盤和分區
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 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]