Date: Tue, 10 Jul 2007 19:53:19 -0700 From: Garrett Cooper <youshi10@u.washington.edu> To: RW <fbsd06@mlists.homeunix.com> Cc: freebsd-questions@freebsd.org Subject: Re: Detecting CPU Type Message-ID: <4694461F.2010702@u.washington.edu> In-Reply-To: <20070711022053.07db646d@gumby.homeunix.com.> References: <4693E403.9090800@oregnier.net> <4693EF39.9090003@xxiii.com> <20070711022053.07db646d@gumby.homeunix.com.>
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RW wrote:
> On Tue, 10 Jul 2007 16:42:33 -0400
> Rob <r17fbsd@xxiii.com> wrote:
>
>
>> Olivier Regnier wrote:
>>
>>> I searching to find information about my CPU type.
>>> i have this: CPU: Mobile AMD Sempron(tm) Processor 2800+
>>> (1600.06-Mhz 686-class CPU) I must configure my CPUTYPE?=
>>> in /etc/make.conf. I'ts i686 (686-class) or i386 ?
>>>
>> "i386" is the architecture; it includes all the similar processors
>> including the 486, Pentiums, Athlon, etc. Other architectures are
>> completely different hardware, eg Sun's SPARC.
>>
>> The 686-class is the specific processor within the i386
>> architecture. if you look in /usr/share/examples/etc/make.conf
>> you'll see a list of options for CPUTYPE. athlon-xp might be the
>> closest to your cpu. However, some folks here recommend against
>> using overly specific cpu optimization. You can go safe and just use
>> pentium4
>>
>
> I'm not sure that is safe, Athlons, Sempron etc are back-compatible to
> 686 i.e. Pentium Pro, which is way before Intel developed the Pentium4.
>
Use athlon-xp (hyphen or no hyphen? I forget..).
-Garrett
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