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。
[code]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
[code]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
[code]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]