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Date: Wed, 21 Sep 2005 17:37:12 +0200
From: Attila Nagy <bra@fsn.hu>
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Cc: freebsd-amd64@freebsd.org, freebsd-hardware@freebsd.org
Subject: Re: Dual core AMD64 4400+ X2 works fine on Abit AV8
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Alexander Konovalenko wrote:
> 2) recompiled and installed 5.4-STABLE kernel with "options SMP", then I 
> tested it with old single core CPU
> CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ (2247.42-MHz K8-class CPU)
>   Origin = "AuthenticAMD"  Id = 0x20f32  Stepping = 2
> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C
> MOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
>   Features2=0x1<SSE3>
>   AMD Features=0xe2500800<SYSCALL,NX,MMX+,<b25>,LM,3DNow+,3DNow>
>   Hyperthreading: 2 logical CPUs
Can this "I see hyperthreading, while there is no hyperthreading" cause 
performance degradation, for example by HTT defaults to off in the 
recent 5.x builds?

-- 
Attila Nagy                                   e-mail: Attila.Nagy@fsn.hu
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