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тАО04-02-2007 12:33 AM
тАО04-02-2007 12:33 AM
Can any one tell me the no of CPUs this system has? Is the CPU count really 4 ? or its showing 4 because of dual core processors?
slx86sus10t3:/ # cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 270
stepping : 2
cpu MHz : 1991.427
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy ts fid vid ttp
bogomips : 3988.18
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 270
stepping : 2
cpu MHz : 1991.427
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy ts fid vid ttp
bogomips : 3982.90
processor : 2
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 270
stepping : 2
cpu MHz : 1991.427
cache size : 1024 KB
physical id : 1
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy ts fid vid ttp
bogomips : 3982.87
processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 270
stepping : 2
cpu MHz : 1991.427
cache size : 1024 KB
physical id : 1
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
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 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy ts fid vid ttp
bogomips : 3982.81
Solved! Go to Solution.
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тАО04-02-2007 02:28 AM
тАО04-02-2007 02:28 AM
Solution- Mark as New
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тАО04-02-2007 04:03 AM
тАО04-02-2007 04:03 AM
Re: No of physical processors on RedHat
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тАО04-02-2007 04:42 PM
тАО04-02-2007 04:42 PM
Re: No of physical processors on RedHat
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тАО04-02-2007 04:56 PM
тАО04-02-2007 04:56 PM
Re: No of physical processors on RedHat
I've an RH4 m/c which shows 2 processors with same physical id with command `cat /proc/cpuinfo`. And these processors are not dual core. Then why is it showing 2 processors? Is it because the processor may support hyperthreading technology. I am not sure if it is supporting Hyperthreading. Is there any way I can check?
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тАО04-02-2007 05:22 PM
тАО04-02-2007 05:22 PM
Re: No of physical processors on RedHat
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тАО04-02-2007 07:30 PM
тАО04-02-2007 07:30 PM
Re: No of physical processors on RedHat
So, I think that:
- if you see the 'ht' flag but 'cpu cores' is 1, then you have a 'regular' Hyper-Threaded CPU;
- if you see the 'ht' flag and 'cpu cores' is >1, then you have a multi-core CPU.