Date: Tue, 31 May 2005 07:42:40 -0700 From: "David O'Brien" <obrien@freebsd.org> To: Andre Guibert de Bruet <andy@siliconlandmark.com> Cc: Roland Smith <rsmith@xs4all.nl>, "Jack L." <xxjack12xx@doramail.com>, freebsd-amd64@freebsd.org, freebsd-current@freebsd.org Subject: Re: Intel EM64T Processor Platform Message-ID: <20050531144240.GE9158@dragon.NUXI.org> In-Reply-To: <20050530235253.W69811@lexi.siliconlandmark.com> References: <20050529080029.687192B2B86@ws5-7.us4.outblaze.com> <20050529081442.GA99205@slackbox.xs4all.nl> <20050530235253.W69811@lexi.siliconlandmark.com>
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On Tue, May 31, 2005 at 12:00:44AM -0400, Andre Guibert de Bruet wrote: > On Sun, 29 May 2005, Roland Smith wrote: > >On Sun, May 29, 2005 at 12:00:29AM -0800, Jack L. wrote: > >> > >>What cpu type should I use for make.conf and the kernel if I want to > >>use the AMD64 platform? > > > >You do not need to have anything special in make.conf, and the GENERIC > >kernel for amd64 contains the necessary 'machine' and 'cpu' paramaters. > > This is not entirely correct. Sure, your system will run without anything > special in make.conf; But if you want decent performance, you probably > want to set CPUTYPE to "nocona" in order to get a build that is tailored > to your cpu (SSE3, etc). More information on what that CPUTYPE enables is > available in /usr/share/mk/bsd.cpu.mk. You're saying that one doesn't get decent performance on a Nocona with stock GCC code generation? While one may get noticeably better performance with CPUTYPE=nocona, I doubt it is a huge difference. What I'm saying is, I sure one will have decent performance with a stock FreeBSD/amd64 install. -- -- David (obrien@FreeBSD.org)
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