Re: 2.6.16-rc5 'lost' cpu

[Bill Davidsen <davidsen@tmr.com>]

jensmh@gmx.de wrote:
> This is a dual xeon system with hyper threading enabled, so there should
> be 4 cpus

It decided that the first CPU had only one sibling, sounds like an ACPI 
issue, if I had to place a bet I would lean to the hardware/BIOS not 
admitting to that 2nd sibling.
> jm@voyager ~ $ ll /proc/acpi/processor/
> total 0
> dr-xr-xr-x  2 root root 0 Mar  2 05:01 CPU0
> dr-xr-xr-x  2 root root 0 Mar  2 05:01 CPU1
> dr-xr-xr-x  2 root root 0 Mar  2 05:01 CPU3
>
> jm@voyager ~ $ cat /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         : 2792.148
> cache size      : 512 KB
> physical id     : 0
> siblings        : 1
> 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 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
> bogomips        : 5588.74
>
> processor       : 1
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 2
> model name      : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping        : 9
> cpu MHz         : 2799.930
> cache size      : 512 KB
> physical id     : 3
> 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 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
> bogomips        : 5581.39
>
> processor       : 2
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 2
> model name      : Intel(R) Xeon(TM) CPU 2.80GHz
> stepping        : 9
> cpu MHz         : 2799.930
> cache size      : 512 KB
> physical id     : 3
> 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 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
> bogomips        : 5581.34

--
   -bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
 last possible moment - but no longer"  -me
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