Linux下cpu信息查看

1、查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
 
2、查看逻辑CPU的个数（查看每个物理CPU中core的个数-即核数）
#cat /proc/cpuinfo |grep "processor"|wc -l
 
3、查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq
 
4、查看CPU的主频
#cat /proc/cpuinfo |grep MHz|uniq

5、查看cpu型号信息
#cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c

6、查看cpu位数
#getconf LONG_BIT

7、查看cpu每核信息
#cat /proc/cpuinfo | grep physical | uniq -c

8、获取cpu详细信息
#cat /proc/cpuinfo

9、查看当前操作系统内核信息
#uname -a

示例脚本：

[root@master ~]# cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
1
[root@master ~]# cat /proc/cpuinfo |grep "processor"|wc -l
4
[root@master ~]# cat /proc/cpuinfo |grep "cores"|uniq
cpu cores	: 4
[root@master ~]# cat /proc/cpuinfo |grep MHz|uniq
cpu MHz		: 2494.222
[root@master ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
      4  Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
[root@master ~]# getconf LONG_BIT
64
[root@master ~]# cat /proc/cpuinfo | grep physical | uniq -c
      1 physical id	: 0
      1 address sizes	: 46 bits physical, 48 bits virtual
      1 physical id	: 0
      1 address sizes	: 46 bits physical, 48 bits virtual
      1 physical id	: 0
      1 address sizes	: 46 bits physical, 48 bits virtual
      1 physical id	: 0
      1 address sizes	: 46 bits physical, 48 bits virtual
[root@master ~]# cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 63
model name	: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
stepping	: 2
microcode	: 0x1
cpu MHz		: 2494.222
cache size	: 30720 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
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 eagerfpu 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 xsaveopt
bogomips	: 4988.44
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		: 63
model name	: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
stepping	: 2
microcode	: 0x1
cpu MHz		: 2494.222
cache size	: 30720 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
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 eagerfpu 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 xsaveopt
bogomips	: 4988.44
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		: 63
model name	: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
stepping	: 2
microcode	: 0x1
cpu MHz		: 2494.222
cache size	: 30720 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
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 eagerfpu 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 xsaveopt
bogomips	: 4988.44
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		: 63
model name	: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
stepping	: 2
microcode	: 0x1
cpu MHz		: 2494.222
cache size	: 30720 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 3
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
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 eagerfpu 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 xsaveopt
bogomips	: 4988.44
clflush size	: 64
cache_alignment	: 64
address sizes	: 46 bits physical, 48 bits virtual
power management:

[root@master ~]# uname -a
Linux master 3.10.0-123.9.3.el7.x86_64 #1 SMP Thu Nov 6 15:06:03 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux