系统信息

# 查看CPU信息
$ lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              8
On-line CPU(s) list: 0-7
Thread(s) per core:  2
Core(s) per socket:  4
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Gold 6266C CPU @ 3.00GHz
Stepping:            7
CPU MHz:             3000.000
BogoMIPS:            6000.00
Hypervisor vendor:   KVM
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            30976K
NUMA node0 CPU(s):   0-7
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat 
pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good 
nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 
sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor 
lahf_lm abm 3dnowprefetch invpcid_single ssbd ibrs ibpb stibp ibrs_enhanced fsgsbase 
tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx avx512f avx512dq rdseed adx smap 
clflushopt clwb avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 arat avx512_vnni 
md_clear flush_l1d arch_capabilities

# lshw是一个通用的工具，可以列出多种硬件单元的详细或者概要的信息，比如 CPU、内存、usb 控制器、硬盘等。
# lshw能够从各个“/proc”文件中提取出相关的信息。
$ lshw -short
H/W path        Device     Class          Description
=====================================================
                           system         OpenStack Nova
/0                         bus            Motherboard
/0/0                       memory         96KiB BIOS
/0/400                     processor      Intel(R) Xeon(R) Gold 6266C CPU @ 3.00GHz
/0/1000                    memory         16GiB System Memory
/0/1000/0                  memory         16GiB DIMM RAM
/0/100                     bridge         440FX - 82441FX PMC [Natoma]
/0/100/1                   bridge         82371SB PIIX3 ISA [Natoma/Triton II]
/0/100/1/0                 system         PnP device PNP0b00
/0/100/1/1                 input          PnP device PNP0303
/0/100/1/2                 input          PnP device PNP0f13
/0/100/1/3                 storage        PnP device PNP0700
/0/100/1/4                 communication  PnP device PNP0501
/0/100/1.1                 storage        82371SB PIIX3 IDE [Natoma/Triton II]
/0/100/1.2                 bus            82371SB PIIX3 USB [Natoma/Triton II]
/0/100/1.2/1    usb1       bus            UHCI Host Controller
/0/100/1.2/1/1  input5     input          QEMU QEMU USB Tablet
/0/100/1.3                 bridge         82371AB/EB/MB PIIX4 ACPI
/0/100/2        /dev/fb0   display        GD 5446
/0/100/3                   network        Virtio network device
/0/100/3/0      eth0       network        Ethernet interface
/0/100/4                   bridge         QEMU PCI-PCI bridge
/0/100/5                   bridge         QEMU PCI-PCI bridge
/0/100/5/1                 storage        Virtio block device
/0/100/5/1/0    /dev/vda   disk           42GB Virtual I/O device
/0/100/5/1/0/1  /dev/vda1  volume         39GiB EXT4 volume
/0/100/5/2                 storage        Virtio block device
/0/100/5/2/0    /dev/vdb   disk           1503GB Virtual I/O device
/0/100/6                   bridge         QEMU PCI-PCI bridge
/0/100/7                   bridge         QEMU PCI-PCI bridge
/0/100/8                   bridge         QEMU PCI-PCI bridge
/0/100/9                   bridge         QEMU PCI-PCI bridge
/0/100/a                   bridge         QEMU PCI-PCI bridge
/0/100/b                   bridge         QEMU PCI-PCI bridge
/0/100/c                   communication  Virtio console
/0/100/c/0                 generic        Virtual I/O device
/0/100/d                   generic        Virtio memory balloon
/0/100/d/0                 generic        Virtual I/O device
/1              input0     input          Power Button
/2              input1     input          AT Translated Set 2 keyboard
/3              input3     input          VirtualPS/2 VMware VMMouse
/4              input4     input          VirtualPS/2 VMware VMMouse
/5              input6     input          PC Speaker