From owner-cvs-all@FreeBSD.ORG Mon May 19 07:00:48 2003 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7E86F37B401; Mon, 19 May 2003 07:00:48 -0700 (PDT) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5960D43F3F; Mon, 19 May 2003 07:00:46 -0700 (PDT) (envelope-from j@uriah.heep.sax.de) Received: (from uucp@localhost) by sax.sax.de (8.9.3/8.9.3) with UUCP id QAA25753; Mon, 19 May 2003 16:00:35 +0200 (CEST) Received: from uriah.heep.sax.de (localhost.heep.sax.de [127.0.0.1]) by uriah.heep.sax.de (8.12.9/8.12.6) with ESMTP id h4JDwOo1011508; Mon, 19 May 2003 15:58:24 +0200 (MET DST) (envelope-from j@uriah.heep.sax.de) Received: (from j@localhost) by uriah.heep.sax.de (8.12.9/8.12.6/Submit) id h4JDwOXZ011507; Mon, 19 May 2003 15:58:24 +0200 (MET DST) (envelope-from j) Date: Mon, 19 May 2003 15:58:24 +0200 From: Joerg Wunsch To: Alexander Leidinger Message-ID: <20030519155824.M2937@uriah.heep.sax.de> References: <200305190828.h4J8S8l0069634@repoman.freebsd.org> <20030519094115.GC1035@sunbay.com> <20030519115435.C2937@uriah.heep.sax.de> <20030519104604.GB17366@sunbay.com> <20030519125334.D2937@uriah.heep.sax.de> <20030519114332.GG17366@sunbay.com> <20030519115339.GI17366@sunbay.com> <20030519121239.GA6087@rot13.obsecurity.org> <20030519143325.H2937@uriah.heep.sax.de> <20030519153809.1b01f51b.Alexander@Leidinger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030519153809.1b01f51b.Alexander@Leidinger.net>; from Alexander@Leidinger.net on Mon, May 19, 2003 at 03:38:09PM +0200 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Spam-Status: No, hits=-32.5 required=5.0 tests=EMAIL_ATTRIBUTION,IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES, REPLY_WITH_QUOTES,USER_AGENT_MUTT version=2.53 X-Spam-Checker-Version: SpamAssassin 2.53 (1.174.2.15-2003-03-30-exp) cc: cvs-ports@FreeBSD.org cc: ports-committers@FreeBSD.org cc: ru@FreeBSD.org cc: cvs-all@FreeBSD.org cc: kris@obsecurity.org Subject: Re: cvs commit: ports/devel/avr-libc Makefile X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Joerg Wunsch List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 May 2003 14:00:49 -0000 As Alexander Leidinger wrote: > People which don't care about some few percent more performance > don't need the default CPUTYPE, those who care will figure out how > to do it. That's exactly my point. Heck, when the default kernel was released of the burden to still support 80386 CPUs (where it was known that a kernel that must support these CPUs is less efficient than one that can concentrate on 80486+), the overall "make world" speedup gained by it was reported to be as few as 2 %. So i don't see why to bother with any -mcpu stuff by default. Except for few compute-intensive tasks, it will only gain a few percent at best. For populare AMD CPUs, the speedup is even likely to become negative... -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)