CentOS7查看CPU和内存情况

佚名 6年前 (2019-05-05) 随笔 1684人围观抢沙发百度已收录

　　本文简单介绍在CentOS7上查看CPU和内存情况。

查看CPU情况

　　以下是个人工作会经常使用到的服务器的信息。

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查看所有CPU信息

　　可以通过如下命令查看所有CPU信息：

# cat /proc/cpuinfo

[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ cat /proc/cpuinfo 
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 0
cpu cores    : 4
apicid        : 0
initial apicid    : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 1
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 1
cpu cores    : 4
apicid        : 2
initial apicid    : 2
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 2
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 2
cpu cores    : 4
apicid        : 4
initial apicid    : 4
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 3
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 3
cpu cores    : 4
apicid        : 6
initial apicid    : 6
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 4
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 0
cpu cores    : 4
apicid        : 1
initial apicid    : 1
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 5
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 1
cpu cores    : 4
apicid        : 3
initial apicid    : 3
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 6
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 2
cpu cores    : 4
apicid        : 5
initial apicid    : 5
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

processor    : 7
vendor_id    : GenuineIntel
cpu family    : 6
model        : 94
model name    : Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
stepping    : 3
microcode    : 0x7c
cpu MHz        : 3699.890
cache size    : 8192 KB
physical id    : 0
siblings    : 8
core id        : 3
cpu cores    : 4
apicid        : 7
initial apicid    : 7
fpu        : yes
fpu_exception    : yes
cpuid level    : 22
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves
bogomips    : 6816.08
clflush size    : 64
cache_alignment    : 64
address sizes    : 39 bits physical, 48 bits virtual
power management:

View Code

　　通过一些正则命令，对信息进行简单处理得到我们想要直观了解的。

查看CPU处理器个数及核心数

[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ cat /proc/cpuinfo | grep processor
processor    : 0
processor    : 1
processor    : 2
processor    : 3
processor    : 4
processor    : 5
processor    : 6
processor    : 7
[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ cat /proc/cpuinfo | grep processor | wc -l
8
[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ cat /proc/cpuinfo | grep cores
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4
cpu cores    : 4

　　我们可以看到总共有8个CPU处理器，每个CPU含4个核心，所以总共是32核处理器。

查看内存情况

　　可以通过如下命令查看系统内存情况。

[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ cat /proc/meminfo
MemTotal:       32702400 kB
MemFree:         3832872 kB
MemAvailable:    9085276 kB
Buffers:          581664 kB
Cached:          4648776 kB
SwapCached:            0 kB
Active:         24087688 kB
Inactive:        3200156 kB
Active(anon):   22058572 kB
Inactive(anon):    15576 kB
Active(file):    2029116 kB
Inactive(file):  3184580 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       3932156 kB
SwapFree:        3932156 kB
Dirty:              1640 kB
Writeback:             0 kB
AnonPages:      22055476 kB
Mapped:           214600 kB
Shmem:             16764 kB
Slab:             366336 kB
SReclaimable:     292124 kB
SUnreclaim:        74212 kB
KernelStack:       47264 kB
PageTables:        92440 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    20283356 kB
Committed_AS:   44230900 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      605820 kB
VmallocChunk:   34359129668 kB
HardwareCorrupted:     0 kB
AnonHugePages:  18122752 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      100336 kB
DirectMap2M:     2965504 kB
DirectMap1G:    30408704 kB

　　我们最关注的的应该是总内存以及剩余可用内存，更常用的命令是free。

free查看内存使用情况

[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ free
              total        used        free      shared  buff/cache   available
Mem:       32702400    23234672     3867356       16812     5600372     9123264
Swap:       3932156           0     3932156
[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ free -m    # 以M为单位显示
              total        used        free      shared  buff/cache   available
Mem:          31935       22690        3776          16        5469        8908
Swap:          3839           0        3839
[starnight@344eeb24-3fac-11e9-b49d-0014101d20c6 ~]$ free -h    # 以人可读的方式显示，单位G
              total        used        free      shared  buff/cache   available
Mem:            31G         22G        3.7G         16M        5.3G        8.7G
Swap:          3.7G          0B        3.7G

　　可以看到内存总共31G左右，可用8.7G。