Re: Detection of HTT

From: Wilkinson, Alex <alex.wilkinson_at_dsto.defence.gov.au>
Date: Tue, 16 Nov 2004 12:59:26 +1030
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
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Received on Tue Nov 16 2004 - 01:32:26 UTC

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