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Linux下查看系统配置

CPU

1. lscpu:显示cpu架构信息

[xxx@localhost ~]$ lscpuArchitecture:          x86_64CPU op-mode(s):        32-bit, 64-bitByte Order:            Little EndianCPU(s):                4          #总处理器核心数量On-line CPU(s) list:   0-3Thread(s) per core:    1          #每个核心支持的线程数量。1表示只支持一个线程,即不支持超线程Core(s) per socket:    1          #每个处理器的核心数量Socket(s):             4          #处理器数量NUMA node(s):          1Vendor ID:             GenuineIntelCPU family:            6Model:                 63Stepping:              0CPU MHz:               2599.998BogoMIPS:              5199.99Hypervisor vendor:     VMware       #管理程序供应商Virtualization type:   fullL1d cache:             32KL1i cache:             32KL2 cache:              256KL3 cache:              30720KNUMA node0 CPU(s):     0-3

总处理器核心数量=处理器数量*每个处理器的核心数量*每个核心支持的线程数量。即:CPU(s) = Socket(s) * Core(s) * Thread(s)。

我们看一下MAN中是如何描述的:

[xxx@localhost ~]$ man lscpu   COLUMNS       CPU    The logical CPU number of a CPU as used by the Linux kernel.    #逻辑CPU数量       CORE   The logical core number. A core can contain several CPUs.      #逻辑核心数量       SOCKET The logical socket number. A socket can contain several cores.   #逻辑插槽(路)数量

 

2. cat /proc/cpuinfo:查看CPU详细信息

[xxx@localhost ~]$ cat /proc/cpuinfo processor       : 0vendor_id       : GenuineIntelcpu family      : 6model           : 63model name      : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHzstepping        : 0cpu MHz         : 2599.998cache size      : 30720 KBfpu             : yesfpu_exception   : yescpuid level     : 13wp              : yesflags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dtsbogomips        : 5199.99clflush size    : 64cache_alignment : 64address sizes   : 40 bits physical, 48 bits virtualpower management:processor       : 1vendor_id       : GenuineIntelcpu family      : 6model           : 63model name      : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHzstepping        : 0cpu MHz         : 2599.998cache size      : 30720 KBfpu             : yesfpu_exception   : yescpuid level     : 13wp              : yesflags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dtsbogomips        : 5199.99clflush size    : 64cache_alignment : 64address sizes   : 40 bits physical, 48 bits virtualpower management:processor       : 2vendor_id       : GenuineIntelcpu family      : 6model           : 63model name      : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHzstepping        : 0cpu MHz         : 2599.998cache size      : 30720 KBfpu             : yesfpu_exception   : yescpuid level     : 13wp              : yesflags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dtsbogomips        : 5199.99clflush size    : 64cache_alignment : 64address sizes   : 40 bits physical, 48 bits virtualpower management:processor       : 3vendor_id       : GenuineIntelcpu family      : 6model           : 63model name      : Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHzstepping        : 0cpu MHz         : 2599.998cache size      : 30720 KBfpu             : yesfpu_exception   : yescpuid level     : 13wp              : yesflags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dtsbogomips        : 5199.99clflush size    : 64cache_alignment : 64address sizes   : 40 bits physical, 48 bits virtualpower management:

 

 这样输出的话,内容有些多,看起来会有些混乱。我们可以用几条命令来查看我们想要知道的信息:

# 查看物理CPU个数cat /proc/cpuinfo | grep "physical id" | sort | uniq# 查看每个物理CPU中core的个数(即核数)cat /proc/cpuinfo | grep "cpu cores" | uniq# 查看每个物理CPU中线程的个数cat /proc/cpuinfo | grep "siblings" | uniq# 查看逻辑CPU的个数cat /proc/cpuinfo| grep "processor"# 查看CPU型号cat /proc/cpuinfo | grep "model name" | uniq

 

内存

查看/proc/meminfo或者使用free命令。free命令就是从meminfo中获取的信息。一般情况下,使用free就能得到我们想知道的信息:

[xxx@localhost ~]$ free -m             total       used       free     shared    buffers     cachedMem:          7868        954       6914          0         64        619-/+ buffers/cache:        271       7597Swap:         4031          0       4031

 

可以看出,内存大小是8G。

 

硬盘

1. lsblk:blk是block的缩写。列出块设备

[xxx@localhost ~]$ lsblkNAME                        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTsr0                          11:0    1 1024M  0 rom  sdb                           8:16   0  100G  0 disk └─sdb1                        8:17   0  100G  0 part /datasda                           8:0    0   60G  0 disk ├─sda1                        8:1    0  500M  0 part /boot└─sda2                        8:2    0 59.5G  0 part   ├─VolGroup-lv_root (dm-0) 253:0    0   50G  0 lvm  /  ├─VolGroup-lv_swap (dm-1) 253:1    0    4G  0 lvm  [SWAP]  └─VolGroup-lv_home (dm-2) 253:2    0  5.6G  0 lvm  /home

 

其中,TYPE=disk表示硬盘。可以看出,硬盘分为sda和sdb,一共160G。

 

2. df:查看硬盘使用情况

[xxx@localhost ~]$ df -hFilesystem                    Size  Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root   50G  1.7G   46G   4% /tmpfs                         3.9G     0  3.9G   0% /dev/shm/dev/sda1                     485M   39M  421M   9% /boot/dev/mapper/VolGroup-lv_home  5.5G  165M  5.1G   4% /home/dev/sdb1                      99G  188M   94G   1% /data

所有行的Size全加起来,也能大概算出硬盘大小。

 

参考:

1. 百度百科双CPU中对超线程、双核心、双CPU的介绍:双CPU

2. CSDN博客:Linux下查看CPU信息[/proc/cpuinfo]

3. CSDN博客:处理器CPU概念及CPU多线程

4.博客园博客:Linux 查看系统硬件信息(实例详解)

 

Linux下查看系统配置