linux直接用命令查看主机cpu型号,个数,逻辑c个数,核心数

有时候我们购买的新主机,想查询一下硬件配置是不是商家说的一样(你懂的),这时我们可以不用第三方式工具，直接用Linux命令就可以查询到cpu型号,物理cpu个数,逻辑cpu个数,cpu核心数。

无需第三方工具,proc文件系统里面的/proc/cpuinfo提供了丰富的cpu信息,其输出类似如下:

1. processor:0
2. vendor_id:AuthenticAMD
3. cpufamily:16
4. model:4
5. modelname:Quad-CoreAMDOpteron(tm)Processor8382
6. stepping:2
7. microcode:0x1000086
8. cpuMHz:2611.977
9. cachesize:512KB
10. physicalid:0
11. siblings:4
12. coreid:0
13. cpucores:4
14. apicid:4
15. initialapicid:0
16. fpu:yes
17. fpu_exception:yes
18. cpuidlevel:5
19. wp:yes
20. flags:fpuvmedepsetscmsrpaemcecx8apicsepmtrrpgemcacmovpatpse36clflushmmxfxsrssesse2htsyscallnxmmxextfxsr_optpdpe1gbrdtscplm3dnowext3dnowconstant_tscrep_goodnoplnonstop_tscextd_apicidpnimonitorcx16popcntlahf_lmcmp_legacysvmextapiccr8_legacyabmsse4amisalignsse3dnowprefetchosvwibsskinitwdthw_pstatenptlbrvsvm_locknrip_save
21. bogomips:5223.95//phpfensi.com
22. TLBsize:10244Kpages
23. clflushsize:64
24. cache_alignment:64
25. addresssizes:48bitsphysical,48bitsvirtual
26. powermanagement:tsttptmstc100mhzstepshwpstate

型号和逻辑CPU个数:

1. $cat/proc/cpuinfo|grep'modelname'|cut-f2-d:|uniq-c
2. 32Quad-CoreAMDOpteron(tm)Processor8382

可以看到有32个逻辑CPU,后面是型号,物理CPU个数:

1. $cat/proc/cpuinfo|grep'physicalid'|uniq-d
2. physicalid:0
3. physicalid:1
4. physicalid:2
5. physicalid:3
6. physicalid:4
7. physicalid:5
8. physicalid:6
9. physicalid:7
11. //或者
13. $cat/proc/cpuinfo|grep'physicalid'|uniq-d|cut-f1-d:|uniq-c
14. 8physicalid

可以看到有8颗物理CPU,每颗CPU核心数:

1. $cat/proc/cpuinfo|grep'cpucores'|uniq
2. cpucores:4
4. //或者
6. $cat/proc/cpuinfo|grep'coreid'|sort|uniq
7. coreid:0
8. coreid:1
9. coreid:2
10. coreid:3

8*4刚好是32颗逻辑CPU,如果有超线程技术则不是简单的相乘就可以,还要乘以每个核心的线程数,还有一个命令lscpu,可以总览系统cpu概况:

1. $lscpu
2. Architecture:x86_64
3. CPUop-mode(s):32-bit,64-bit
4. ByteOrder:LittleEndian
5. CPU(s):32
6. On-lineCPU(s)list:0-31
7. Thread(s)percore:1
8. Core(s)persocket:4
9. Socket(s):8
10. NUMAnode(s):4
11. VendorID:AuthenticAMD
12. CPUfamily:16
13. Model:4
14. Stepping:2
15. CPUMHz:2611.977
16. BogoMIPS:5224.55
17. Virtualization:AMD-V
18. L1dcache:64K
19. L1icache:64K
20. L2cache:512K
21. L3cache:6144K
22. NUMAnode0CPU(s):0-3
23. NUMAnode1CPU(s):4-7
24. NUMAnode2CPU(s):8-11
25. NUMAnode3CPU(s):12-31