[CentOS] SMP on a HP DL-320 G2

[John R Pierce]

Jay Leafey wrote:
> fredex wrote:
>> Hi gang!
>>
>> At work I have a DL320 G2 machine I use as my desktop (I know, 
>> weird!...).
>>
>> Back when I ran RHEL WS 2.1 on it, it always ran a SMP kernel because it
>> has a HypterThread capable processor.
>>
>> When I installed (fresh from scratch) Centos 4.4 on it a while back, 
>> though,
>> Centos installed only the UP kernel.
>>
>> I've looked in the BIOS for settings to enable/disable HT support and
>> I don't see anything.
>>
>> I've force-installed the SMP kernel and when I boot it it doesn't seem
>> to think there's anything thre but a normal UP CPU.
>>
>> Should it not show two CPUs in top, and in suitable places in /proc like
>> the earlier OS did? (at least when running a SMP kernel)
>>
>> Ideas welcome.
>>
>> Thanks!
>
> The DL-320 G2's I've got (6 at last count) running CentOS/RHEL 3 and 4 
> all show up in /proc/cpuinfo as single-core with no hyperthreading.  
> Here's the example output from one of them:
>
> [root at directory1 root]# cat /proc/cpuinfo
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 2
> model name      : Intel(R) Pentium(R) 4 CPU 2.66GHz
> stepping        : 9
> cpu MHz         : 2666.038
> cache size      : 512 KB
> 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 sep mtrr pge 
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
> bogomips        : 5321.52

odd.    I have a dual xeon of about that generation that shows up 
as..      note this is family 15, model 2, stepping 7, while yours is 
stepping 15/2/9, which would be later.   now, mine are running 2.4 
(centos3 and centos2.1)

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 7
cpu MHz         : 2791.038
cache size      : 512 KB
physical id     : 0
siblings        : 2
runqueue        : 0
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 sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 5570.56

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 7
cpu MHz         : 2791.038
cache size      : 512 KB
physical id     : 0
siblings        : 2
runqueue        : 0
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 sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 5570.56

processor       : 2
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 7
cpu MHz         : 2791.038
cache size      : 512 KB
physical id     : 3
siblings        : 2
runqueue        : 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 cx8 apic sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 5570.56

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Xeon(TM) CPU 2.80GHz
stepping        : 7
cpu MHz         : 2791.038
cache size      : 512 KB
physical id     : 3
siblings        : 2
runqueue        : 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 cx8 apic sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 5570.56