redhat detecting too many cpus?

[Harjinder Singh]

  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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