redhat detecting too many cpus?

[Dege, Robert C.]

Hyper-Threading maybe? 

> -----Original Message-----
> From: redhat-list-bounces at redhat.com 
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Harjinder Singh
> Sent: Wednesday, January 11, 2006 2:19 PM
> To: redhat-list at redhat.com
> Subject: redhat detecting too many cpus? 
> 
>   I'm currently running Red Hat ES 4.0 on a server, which has 
> two Xeon 2.8 MHz Processors, installed.  However when I run 
> cat /proc/cpuinfo to retrieve the CPU info it lists 4 
> processors installed. 
>  
>  Is there something wrong with the configuration of my Linux 
> installation?  Does anyone know why it would list 4 cpus when 
> I only have 2 installed?
>  
>  Below is the out of cat /proc/cpuinfo,  Thanks!
> 
> processor    : 0
> vendor_id    : GenuineIntel
> cpu family    : 15
> model        : 2
> model name    : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping    : 5
> cpu MHz        : 2788.974
> cache size    : 512 KB
> physical id    : 0
> siblings    : 2
> core id        : 0
> cpu cores    : 1
> fdiv_bug    : no
> hlt_bug        : no
> f00f_bug    : no
> coma_bug    : no
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 2
> wp        : yes
> flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr 
> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
> ht tm pbe cid xtpr
> bogomips    : 5488.64
> 
> processor    : 1
> vendor_id    : GenuineIntel
> cpu family    : 15
> model        : 2
> model name    : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping    : 5
> cpu MHz        : 2788.974
> cache size    : 512 KB
> physical id    : 0
> siblings    : 2
> core id        : 0
> cpu cores    : 1
> fdiv_bug    : no
> hlt_bug        : no
> f00f_bug    : no
> coma_bug    : no
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 2
> wp        : yes
> flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr 
> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
> ht tm pbe cid xtpr
> bogomips    : 5570.56
> 
> processor    : 2
> vendor_id    : GenuineIntel
> cpu family    : 15
> model        : 2
> model name    : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping    : 5
> cpu MHz        : 2788.974
> cache size    : 512 KB
> physical id    : 3
> siblings    : 2
> core id        : 3
> cpu cores    : 1
> fdiv_bug    : no
> hlt_bug        : no
> f00f_bug    : no
> coma_bug    : no
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 2
> wp        : yes
> flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr 
> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
> ht tm pbe cid xtpr
> bogomips    : 5554.17
> 
> processor    : 3
> vendor_id    : GenuineIntel
> cpu family    : 15
> model        : 2
> model name    : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping    : 5
> cpu MHz        : 2788.974
> cache size    : 512 KB
> physical id    : 3
> siblings    : 2
> core id        : 3
> cpu cores    : 1
> fdiv_bug    : no
> hlt_bug        : no
> f00f_bug    : no
> coma_bug    : no
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 2
> wp        : yes
> flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr 
> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
> ht tm pbe cid xtpr
> bogomips    : 5570.56
> 
> 
> 
> 
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