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Date:      Tue, 19 Apr 2005 11:18:31 -0700
From:      "David O'Brien" <obrien@freebsd.org>
To:        Scott Long <scottl@samsco.org>
Cc:        freebsd-amd64@freebsd.org
Subject:   Re: Recommendations?
Message-ID:  <20050419181831.GA27679@dragon.NUXI.org>
In-Reply-To: <42654719.7030607@samsco.org>
References:  <200504131714.20356.jkim@niksun.com> <86fyxt1ovu.fsf@xps.des.no> <20050415005850.GB80903@dragon.NUXI.org> <2fd864e050414180911e4e5be@mail.gmail.com> <20050415211600.GA1473@dragon.NUXI.org> <1113603823.91832.7.camel@cream.xbsd.org> <86ekdbdnqh.fsf@xps.des.no> <4260F103.5050309@mail.uni-mainz.de> <20050419173247.GB26152@dragon.NUXI.org> <42654719.7030607@samsco.org>

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On Tue, Apr 19, 2005 at 11:59:53AM -0600, Scott Long wrote:
> David O'Brien wrote:
> >On Sat, Apr 16, 2005 at 01:03:31PM +0200, O. Hartmann wrote:
> >
> >>I have ASUS A8N-SLI Deluxe mobo. BIOS revision is 1006. I have no 
> >>problems with
> >>ACPI. APIC works with NO_MIXED_MODE commented out in kernel.
> >
> >
> >Disable the NO_MIXED_MODE option is a performance degradation.
> >Bending over and taking it up the a** across all motherboards (which DES
> >has forced on 5.4-RELEASE); makes the ASUS A8N-SLI Deluxe not "perfectly
> >working".
> >
> 
> According to the APIC maintainer, and according to some quick benchmarks 
> myself, mixed mode has almost no performance impact.

Maybe with the latest code - if you're talking about before the very
recent jhb commits.  Peter has said several times there is(was) a
performance issue.  'mixed mode' also is (was?) expressly prohibited by
the ACPI spec.  

-- 
-- David  (obrien@FreeBSD.org)



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