I486_CPU or I586_CPU in kernel config

[Adam Vande More]

On Mon, May 30, 2011 at 3:35 PM, Adam Vande More <amvandemore at gmail.com>wrote:

> On Mon, May 30, 2011 at 9:50 AM, Warren Block <wblock at wonkity.com> wrote:
>
>> Some time back, there was a post on one of the mailing lists that
>> suggested it was better to leave either I486_CPU or I586_CPU enabled in a
>> kernel config even for much newer processors.  For performance reasons,
>> AFAIR.  Naturally I didn't save that post or a link to it.
>>
>> Can anyone find that message, or explain why it would be good to keep
>> either of those cpu options in a kernel that will only run on much newer
>> CPUs?
>>
>
> Um, I don't recall seeing that and have removed them automatically for a
> long time.  Here is one that suggests keeping I586_CPU with results that
> seem less than conclusive.
>
> http://lists.freebsd.org/pipermail/freebsd-stable/2005-December/020702.html
>

Perhaps this is the one you meant?

http://lists.freebsd.org/pipermail/freebsd-questions/2009-January/190568.html

Actually the two threads touch on the same subject, and it seems removal of
those options is still desirable on newer CPU's.


-- 
Adam Vande More