i686 ---> i586, i386 ---> i586, x86_64 stays the same

psmith johnsmithdoe14 at googlemail.com
Mon Apr 6 10:38:37 UTC 2009


Jan Pazdziora wrote:
> On Sun, Apr 05, 2009 at 08:05:41PM -0400, Will Woods wrote:
>   
>> Building for i686 gives *no* real performance benefit[1], but breaks
>> support for i586 machines - Via C7-based netbooks, AMD Geode (e.g. the
>> OLPC XO-1), and so on.
>>
>> -w
>>
>> [1] except on in-order CPUs like Atom and the original Pentium
>>     
>
> Does this mean that for Atom-based machines we are taking the risk of
> introducing some slowdown?
>
>   
yes, it's already evident i'm afraid :(

phil




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