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 1HbIO8-0004nF-4J for garchives@archives.gentoo.org; Tue, 10 Apr 2007 15:36:08 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l3AFYpvB026801; Tue, 10 Apr 2007 15:34:51 GMT Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.238]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l3AFTkJj020391 for ; Tue, 10 Apr 2007 15:29:46 GMT Received: by wr-out-0506.google.com with SMTP id i4so1291397wra for ; Tue, 10 Apr 2007 08:29:46 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=lOE2t7TEHBMUpaOlz8wrNH88zGBc5w2mpFpir0LRUxieJGBnymMQUoVomV9X9gQ5DNOj+1RG3Yxqn7TZRn1YO3/nPSu+NZKNP0J3DQyudYyIJDP9XonSXKNGPHNqTDfqJanI6A0DjSOYdItxTaPvgTk96J2oA9JpbQOSEEfSI2M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=d+IleRajv52FR/iAQtVF8vezQjZ32CLqoAGgmNue4RUWQWqyk5i9UwKuQi/Fm/MrNeW/MTgdLNlIbiBvVAQsbSAgAbY4u1n7SwKmnQPohZnX0D0LgJqW6HS0nDoWdLsm9rTm55rUFuM+0eKaziDvVBVKAJksn9aoUQ+YLqchSWU= Received: by 10.114.60.19 with SMTP id i19mr2854512waa.1176218985783; Tue, 10 Apr 2007 08:29:45 -0700 (PDT) Received: by 10.115.47.13 with HTTP; Tue, 10 Apr 2007 08:29:45 -0700 (PDT) Message-ID: <2fcf3fa50704100829o46e409e9vac532ef7b35a5914@mail.gmail.com> Date: Tue, 10 Apr 2007 11:29:45 -0400 From: "Francisco Rivas" To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: CFLAGS "...-O3 -pipe" vs "...O2 " In-Reply-To: <200704101558.48235.uwix@iway.na> 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: multipart/alternative; boundary="----=_Part_32617_24024299.1176218985696" References: <243934.33164.qm@web31714.mail.mud.yahoo.com> <200704101558.48235.uwix@iway.na> X-Archives-Salt: f3253671-d62c-4723-b676-7cdbbe14c987 X-Archives-Hash: e602e5012d8f44124021303da4dd2b33 ------=_Part_32617_24024299.1176218985696 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi all.. Certainly some package have a maximun optimisation. I really believe, the optimisation level is a very interesting thing bucause all depend of what you need and you have all power of your system, only gentoo can give you that. it's very good to see a server compiling most of the applications, and people with few resources in thier pc's can run a very good operating system and no die trying... :P Looking for more information on the web, I see http://www.linuxjournal.com/article/7269. In that article: "...The simplest way to achieve good performance is to rely on the -O2 optimization level; if you're not interested in portability, specify the target architecture using -march=. For space-constrained applications, the -Os optimization level should be considered first.." All is your decision based in what you need... On 4/10/07, Uwe Thiem wrote: > > On 10 April 2007, maxim wexler wrote: > > > Interesting. Just completed emerge -uvDN world using > > the "-03 -pipe" cflags in make.conf for the PIII arch. > > I noticed as the output scrolled by that the flags I > > set were being used for all packages *except* gcc > > which used "-02 -pipe". > > Some packages (ebuilds) set a maximum optimisation. Gcc is one of them, > OpenOffice another one. > > Uwe > > -- > A fast and easy generator of fractals for KDE: > http://www.SysEx.com.na/iwy-1.0.tar.bz2 > Proof of concept of a TSP solver for KDE: > http://www.SysEx.com.na/epat-0.1.tar.bz2 > -- > gentoo-user@gentoo.org mailing list > > -- ['Cause without love I won't survive, I love you]. I Francisco Rivas 2.6.19-gentoo-r5 x86 udev v087 gnome 2.16.2 xorg-x11-7.1 hotplug v20040923-r2 e-mail : fjrivas@uc.edu.ve msn : taken2k4@gmail.com -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCS/E/IT/MU d-(+)@ s++: a-- C++++>++++ ULSC*()>+++ P+(++)>+++ L++(+++)>++++ !E--- W+>++ !N* !o-(--)>-- K--? !w--- !O !M !V PS@ !PE@ Y> PGP t 5 X R+>+ tv- b DI D G e++>+++ h-> r++>+++ y- ------END GEEK CODE BLOCK------ ------=_Part_32617_24024299.1176218985696 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi all..

Certainly some package have a maximun optimisation. I really believe, the optimisation level is a very interesting thing bucause all depend of what you need and you have all power of your system, only gentoo can give you that.

it's very good to see a server compiling most of the applications, and people with few resources in thier pc's can run a very good operating system and no die trying... :P

Looking for more information on the web, I see http://www.linuxjournal.com/article/7269.

In that article: "...The simplest way to achieve good performance is to rely on the -O2 optimization level; if you're not interested in portability, specify the target architecture using -march=. For space-constrained applications, the -Os optimization level should be considered first.."

All is your decision based in what you need...

On 4/10/07, Uwe Thiem <uwix@iway.na> wrote:
On 10 April 2007, maxim wexler wrote:

> Interesting. Just completed emerge -uvDN world using
> the "-03 -pipe" cflags in make.conf for the PIII arch.
> I noticed as the output scrolled by that the flags I
> set were being used for all packages *except* gcc
> which used "-02 -pipe".

Some packages (ebuilds) set a maximum optimisation. Gcc is one of them,
OpenOffice another one.

Uwe

--
A fast and easy generator of fractals for KDE:
http://www.SysEx.com.na/iwy-1.0.tar.bz2
Proof of concept of a TSP solver for KDE:
http://www.SysEx.com.na/epat-0.1.tar.bz2
--
gentoo-user@gentoo.org mailing list




--
['Cause without love I won't survive, I love you]. I

Francisco Rivas
2.6.19-gentoo-r5 x86
udev v087 gnome 2.16.2
xorg-x11-7.1 hotplug v20040923-r2
e-mail : fjrivas@uc.edu.ve
msn : taken2k4@gmail.com

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