2018年11月14日 10:51:27 DebugTheLife 阅读数 1779
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Physical id #相同表示为同一个物理CPU
Processor #逻辑CPU
Cpu cores #CPU核数,内核个数
Core id #内核id号
Siblings #每个物理CPU里面的逻辑CPU个数
[root@testhost ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
4 Intel(R) Core(TM) i7 CPU M 620 @ 2.67GHz
[root@testhost ~]#
[root@testhost ~]# cat /proc/cpuinfo | grep "physical id" | sort -u | wc -l
2
[root@testhost ~]# cat /proc/cpuinfo | grep "processor" | wc -l
4
[root@testhost ~]# cat /proc/cpuinfo | grep "cpu cores" | uniq
cpu cores : 2
[root@testhost ~]# cat /proc/cpuinfo | grep "siblings" | uniq
siblings : 2
逻辑CPU > 物理CPU x CPU核数 #开启超线程 逻辑CPU = 物理CPU x CPU核数 #没有开启超线程或不支持超线程
[root@testhost ~]# cat /proc/cpuinfo | grep -e "cpu cores" -e "siblings" | sort | uniq
cpu cores : 2
siblings : 2
说明:如果cpu cores数量和siblings数量一致,则没有启用超线程,否则超线程被启用。
[root@testhost ~]# cat cpu.sh
#!/bin/bash
cpuname=$(cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c)
physical=$(cat /proc/cpuinfo | grep "physical id" | sort -u | wc -l)
processor=$(cat /proc/cpuinfo | grep "processor" | wc -l)
cpucores=$(cat /proc/cpuinfo | grep "cpu cores" | uniq)
siblings=$(cat /proc/cpuinfo | grep "siblings" | uniq)
echo "* * * * * CPU Information * * * * *"
echo "(CPU型号)cpu name : $cpuname"
echo "(物理CPU个数)physical id is : $physical"
echo "(逻辑CPU个数)processor is : $processor"
echo "(CPU内核数)cpu cores is : $cpucores"
echo "(单个物理CPU的逻辑CPU数)siblings is : $siblings"
[root@testhost ~]#
[root@testhost ~]# sh cpu.sh
* * * * * CPU Information * * * * *
(CPU型号)cpu name : 4 Intel(R) Core(TM) i7 CPU M 620 @ 2.67GHz
(物理CPU个数)physical id is : 2
(逻辑CPU个数)processor is : 4
(CPU内核数)cpu cores is : cpu cores : 2
(单个物理CPU的逻辑CPU数)siblings is : siblings : 2
[root@testhost ~]#
[root@testhost ~]# uname -a
Linux testhost 3.10.0-862.14.4.el7.x86_64 #1 SMP Wed Sep 26 15:12:11 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
说明:i386 i686为32位;x86_64为64位
[root@testhost ~]# cat /proc/cpuinfo | grep lm
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 rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm tsc_adjust arat
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 rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm tsc_adjust arat
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 rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm tsc_adjust arat
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 rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm tsc_adjust arat
说明:lm: “Long Mode,” which means the chip supports the AMD64 instruction set
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