Linux system View hardware configuration

Take the CentOS system as an example
First, the CPU
Cat/proc/cpuinfo
Here is my CPU information, with 4 messages stating there are 4 logical CPUs, but each physical ID is the same, stating that there are only 1 physical CPUs.
1. The "Physical ID" and "core ID" of multiple logical CPUs are the same, indicating that hyper-threading is turned on.
2. There is an LM tag in the flags stating that it is a 64-bit CPU
3, my processor has 4 different numbers, and belong to a physical ID, while the CPU cores value is 1, which also shows that my CPU is a single core, and the core has 4 logical processors.
So, my machine CPU is the Intel (r) Xeon (r) CPU e5-2650 v2 @ 2.60GHz model, a 64-bit physical CPU, a single core 4 thread.

Processor:0VENDOR_ID:GENUINEINTELCPU Family:6Model: +Model Name:intel (R) Xeon (r) CPU e5-2650V2 @2.60Ghzstepping:4Microcode:1046CPU MHz:2600.058Cache Size:20480Kbphysical ID: ASiblings:1Core ID:0CPU Cores:1Apicid: AInitial apicid: AFpu:YesFpu_exception:YesCPUID level: -Wp:YesFLAGS:FPU de TSC msr PAE cx8 Sep cmov Pat Clflush MMX FXSR SSE SSE2 SS HT syscall NX LM CONSTANT_TSC Rep_good UNFA Ir_spinlock PNI pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer AES f16c Rdrand hypervisor lahf_lm ida Arat P ln pts DTS Fsgsbase ermsbogomips:5200.11Clflush Size: -Cache_alignment: -Address sizes: $Bits physical, -Bits VirtualpowerManagement:p Rocessor:1VENDOR_ID:GENUINEINTELCPU Family:6Model: +Model Name:intel (R) Xeon (r) CPU e5-2650V2 @2.60Ghzstepping:4Microcode:1046CPU MHz:2600.058Cache Size:20480Kbphysical ID: ASiblings:1Core ID:0CPU Cores:1Apicid: AInitial apicid: AFpu:YesFpu_exception:YesCPUID level: -Wp:YesFLAGS:FPU de TSC msr PAE cx8 Sep cmov Pat Clflush MMX FXSR SSE SSE2 SS HT syscall NX LM CONSTANT_TSC Rep_good UNFA Ir_spinlock PNI pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer AES f16c Rdrand hypervisor lahf_lm ida Arat P ln pts DTS Fsgsbase ermsbogomips:5200.11Clflush Size: -Cache_alignment: -Address sizes: $Bits physical, -Bits VirtualpowerManagement:p Rocessor:2VENDOR_ID:GENUINEINTELCPU Family:6Model: +Model Name:intel (R) Xeon (r) CPU e5-2650V2 @2.60Ghzstepping:4Microcode:1046CPU MHz:2600.058Cache Size:20480Kbphysical ID: ASiblings:1Core ID:0CPU Cores:1Apicid: AInitial apicid: AFpu:YesFpu_exception:YesCPUID level: -Wp:YesFLAGS:FPU de TSC msr PAE cx8 Sep cmov Pat Clflush MMX FXSR SSE SSE2 SS HT syscall NX LM CONSTANT_TSC Rep_good UNFA Ir_spinlock PNI pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer AES f16c Rdrand hypervisor lahf_lm ida Arat P ln pts DTS Fsgsbase ermsbogomips:5200.11Clflush Size: -Cache_alignment: -Address sizes: $Bits physical, -Bits VirtualpowerManagement:p Rocessor:3VENDOR_ID:GENUINEINTELCPU Family:6Model: +Model Name:intel (R) Xeon (r) CPU e5-2650V2 @2.60Ghzstepping:4Microcode:1046CPU MHz:2600.058Cache Size:20480Kbphysical ID: ASiblings:1Core ID:0CPU Cores:1Apicid: AInitial apicid: AFpu:YesFpu_exception:YesCPUID level: -Wp:YesFLAGS:FPU de TSC msr PAE cx8 Sep cmov Pat Clflush MMX FXSR SSE SSE2 SS HT syscall NX LM CONSTANT_TSC Rep_good UNFA Ir_spinlock PNI pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer AES f16c Rdrand hypervisor lahf_lm ida Arat P ln pts DTS Fsgsbase ermsbogomips:5200.11Clflush Size: -Cache_alignment: -Address sizes: $Bits physical, -Bits VirtualpowerManagement:

Second, memory
Cat/proc/meminfo
Below is my memory information, total memory 3.7G, remaining about 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: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

Third, hard disk
1. View hard disks and partitions
Lsblk

NAME MAJ:MINRM SIZE ROTYPEMountpointxvda202:0    0    -G0Disk├─xvda1202:1    0   -M0Part/boot└─xvda2202:2    0 29.5G0Part├─volgroup-lv_root(DM-0)253:0    0 26.5G0Lvm/└─volgroup-lv_swap(DM-1)253:1    0    3G0Lvm[SWAP]

Linux system View hardware configuration