Re: Detection of HTT

Intel is claiming that your CPU has the registers that will let software
easily find out how many logical cores you have.

Scott

Wilkinson, Alex wrote:
> Yes you're right ! This sux ! What the hell is Intel claiming that I have a
> HTT capable CPU, but really I have only 1 core !
> 
> 
> shell> sudo x86info -f
> 
> x86info v1.12b.  Dave Jones 2001-2003
> Feedback to <davej_at_redhat.com>.
> 
> Found 1 CPU
> --------------------------------------------------------------------------
> Family: 15 Model: 2 Stepping: 9 Type: 0 Brand: 9
> CPU Model: Pentium 4 (Northwood) [D1] Original OEM
> Processor name string: Intel(R) Pentium(R) 4 CPU 2.80GHz
> 
> Feature flags:
>  fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36
> clflsh dtes acpi mmx fxsr sse sse2 selfsnoop ht acc pbe
> Extended feature flags:
>  cntx-id
> Instruction TLB: 4K, 2MB or 4MB pages, fully associative, 128 entries.
> Data TLB: 4KB or 4MB pages, fully associative, 64 entries.
> L1 Data cache:
>         Size: 8KB       Sectored, 4-way associative.
>         line size=64 bytes.
> No level 2 cache or no level 3 cache if valid 2nd level cache.
> Instruction trace cache:
>         Size: 12K uOps  8-way associative.
> L2 unified cache:
>         Size: 512KB     Sectored, 8-way associative.
>         line size=64 bytes.
> Number of logical processors supported within the physical package: 0
> 
>  - aW
> 
> 
> 	0n Tue, Nov 16, 2004 at 12:38:05PM +1030, Michael Nottebrock wrote: 
> 
> 	On Tuesday, 16. November 2004 02:41, Wilkinson, Alex wrote:
> 	> Is it possible to find out whether HTT is turned on in the BIOS
> 	without
> 	> having to reboot ? acpidump(8) ?
> 	>
> 	> It's just that I notice that I have a HTT capable CPU:
> 	>
> 	> CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.19-MHz 686-class CPU)
> 	>   Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9
> 	>  
> 	>
> 	Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE
> 	,MC
> 	>A,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS, HTT,TM,PBE>
> 	
> 	Not all CPUs that advertise 'HTT' do actually offer multiple logical 
> 	processors. sysutils/x86info is a nice utility which can provide this 
> 	information ...
> 	
> 	-- 
> 	   ,_,   | Michael Nottebrock               | lofi_at_freebsd.org
> 	 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
> 	   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org
> 	
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