From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1IBEWt-0007VN-Bx for garchives@archives.gentoo.org; Wed, 18 Jul 2007 18:45:43 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l6IIi8hY014371; Wed, 18 Jul 2007 18:44:08 GMT Received: from poseidon.rz.tu-clausthal.de (poseidon.rz.tu-clausthal.de [139.174.2.21]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l6IIba4S006860 for ; Wed, 18 Jul 2007 18:37:36 GMT Received: from poseidon.rz.tu-clausthal.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 0DFCC2089A5 for ; Wed, 18 Jul 2007 20:37:36 +0200 (CEST) Received: from tu-clausthal.de (poseidon [139.174.2.21]) by poseidon.rz.tu-clausthal.de (Postfix) with ESMTP id F3714208960 for ; Wed, 18 Jul 2007 20:37:35 +0200 (CEST) Received: from energy.heim10.tu-clausthal.de (account wevah [139.174.197.94] verified) by tu-clausthal.de (CommuniGate Pro SMTP 5.1.10) with ESMTPSA id 24946259 for gentoo-user@lists.gentoo.org; Wed, 18 Jul 2007 20:37:35 +0200 From: Volker Armin Hemmann To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Hardware upgrade and Gentoo Date: Wed, 18 Jul 2007 20:37:34 +0200 User-Agent: KMail/1.9.7 References: <342e1090707180951n1f77ee82rc5d8077aa5575d85@mail.gmail.com> <200707181949.00889.wonko@wonkology.org> <342e1090707181102o558b6259s386c807efae548cb@mail.gmail.com> In-Reply-To: <342e1090707181102o558b6259s386c807efae548cb@mail.gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200707182037.34064.volker.armin.hemmann@tu-clausthal.de> X-Virus-Scanned: by PureMessage V4.7 at tu-clausthal.de X-Archives-Salt: 299b4f50-9392-4087-8cf5-b57fe8c3a5a2 X-Archives-Hash: f5c9e9177af80bb2a645a6bd43f186d4 On Mittwoch, 18. Juli 2007, Daniel da Veiga wrote: > On 7/18/07, Alex Schuster wrote: > > Another method, which I would use, would be to change your CFLAGS to what > > you would like for the new processor, but use mtune= instead of march=. > > This will also optimize for the cpu, but the code will run on any x86 > > CPU. emerge world --emptytree to re-compile everything, then switch your > > hardware. This will give you flexibility, at the cost of lesser > > optimization. Depends on how you use your system, most applications will > > not show a noticeable speed ddifference I guess. > > You could also change to march= later, when the system ist up, and > > re-compile everything again to get full optimization. > > Oh, that's good to know, I guess that's the best option, since after > the system is up and running I can do whatever optimizations it needs, > as long as I'm able to boot and work with it in the new hardware. > > Tonight I'll start the (long and boring) process of recompiling the > whole stuff with "-mtune" instead of "-march". > > Thanks to all that replied so far... Maybe more suggestions comming?! instead of two emerge --emptytree it would be faster to just nuke the installation.... -- gentoo-user@gentoo.org mailing list