[TriLUG] Ubuntu and hyperthreaded CPUs

[James Tuttle]

I have a Dell Optiplex with a Xeon 2.8 GHz CPU running Ubuntu 6.06.
Here's the cpu info:

jim at dmz:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 1
cpu MHz         : 2793.102
cache size      : 1024 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 3
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm pni
monitor ds_c
pl cid cx16 xtpr
bogomips        : 5590.35

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 1
cpu MHz         : 2793.102
cache size      : 1024 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 3
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov
                                                               pat pse36
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm pni monitor ds_c

                                                    pl cid cx16 xtpr
bogomips        : 5586.18


Christopher L Merrill wrote:
> Does Ubuntu 7.04 recognize a single Xeon as 2 processors if
> hyperthreading is enabled?
> 
> A specific example:
>    http://i133.photobucket.com/albums/q55/axvel/new/IMG_7386.jpg
> 
> Would that be a single CPU machine?  I know RHEL/CentOS works
> this way...so I was curious if the others do too.  I assume so,
> since this is probably determined by the kernel.
> 
> TIA,
> C
> 


-- 
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---Jim Tuttle
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