uname -a:

Linux blade0103 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686
i686 i386 GNU/Linux

/proc/cpuinfo:

processor		: 0
vendor_id 		: GenuineIntel
cpu family		: 15
model			: 2
model name		: Intel(R) Xeon(TM) CPU 2.80GHz
stepping		: 9
cpu MHz		: 2799.319
cache size		: 512 KB
physical id		: 0
siblings		: 2
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 cx apic sep
mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips		: 5583.66

processor		: 1
vendor_id 		: GenuineIntel
cpu family		: 15
model			: 2
model name		: Intel(R) Xeon(TM) CPU 2.80GHz
stepping		: 9
cpu MHz		: 2799.319
cache size		: 512 KB
physical id		: 0
siblings		: 2
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 cx apic sep
mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips		: 5596.77


Note that there are two processor entries above, but there is only one
physical processor!  This is because the Xeon is hyper-threaded and as
such is seen as two processors by the kernel.