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Date:      Mon, 2 Sep 2002 12:22:41 -0700
From:      Kris Kennaway <kris@obsecurity.org>
To:        magudexter <magudexter@yahoo.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: k6 or i686 optimization on AMD Athlon?
Message-ID:  <20020902192241.GA55707@xor.obsecurity.org>
In-Reply-To: <20020902110157.51962.qmail@web20305.mail.yahoo.com>
References:  <20020902110157.51962.qmail@web20305.mail.yahoo.com>

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On Mon, Sep 02, 2002 at 04:01:57AM -0700, magudexter wrote:

> I recently purchase a AMD XP processor belonging to
> the k7 family. Even though the /etc/default/make.conf
> mentions the k7 processor in CPUTYPE the cc compiler
> know only k6 and i686(alias pentiumpro).

Correct.

> Every build using the make.conf with the CPUTYPE=3Dk7
> make actually a build with march=3Dk6(which belongs to
> i586 family).=20
>     I am not aware of the internals of these
> processors but wouldn't it be wise to use i686 to the
> AMD Duron/Athlon/TB/XP processors to gain more
> performance then the k6 build?

No, the setting it uses is believed to be optimal.

Kris
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