[Mageia-dev] i686 must be Pentium II ?

[Filipe Rosset]

On 09/25/2010 09:16 AM, R James wrote:
> On Sat, Sep 25, 2010 at 4:59 AM, Patrice BRUNELLE
> <patrice.brunelle at free.fr>  wrote:
>> Le vendredi 24 septembre 2010 à 15:51 -0500, R James a écrit :
>>>
>>> Technically, the i686 started with the Pentium Pro.  (Remember that?  :o)
>>>
>>> http://en.wikipedia.org/wiki/P6_(microarchitecture)
>>
>> Yes I remember that. And ?
>>
> Its just a precision to the subject title.  i686 began with the
> Pentium Pro, not Pentium II.
>
> I'm not sure what performance benefits can be gained from compiling
> for i686 vs i586.  Probably not much except for multimedia
> applications which most of those can auto-detect the CPU's
> capabilities anyways.
>

Just for reference, the Fedora Project was changed from i586 to i686:

https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild#Driving_Features
https://fedoraproject.org/wiki/Features/F12X86Support
http://www.mail-archive.com/fedora-devel-list@redhat.com/msg02583.html
http://www.mail-archive.com/fedora-devel-list@redhat.com/msg02889.html 
(with 'benchmarks')
http://fedoraproject.org/wiki/FWN/Issue162#Fedora_11_Will_Support_i586_Instruction_Set

> There are still people running AMD K6's (ie: me) which is also i586.
> If we compile for i686 and newer, they won't even be able to boot the
> installer.
>
> Therefore, I agree with the decision to keep i586 support.

I agree too.

-- 
Filipe
Rio Grande do Sul, Brazil