From owner-freebsd-stable@FreeBSD.ORG Thu Sep 14 04:57:34 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DC6B216A407 for ; Thu, 14 Sep 2006 04:57:34 +0000 (UTC) (envelope-from kline@sage.thought.org) Received: from sage.thought.org (dsl231-043-140.sea1.dsl.speakeasy.net [216.231.43.140]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4E0DE43D45 for ; Thu, 14 Sep 2006 04:57:34 +0000 (GMT) (envelope-from kline@sage.thought.org) Received: from sage.thought.org (kline@localhost [127.0.0.1]) by sage.thought.org (8.13.6/8.12.10) with ESMTP id k8E4vRqF094102; Wed, 13 Sep 2006 21:57:27 -0700 (PDT) (envelope-from kline@sage.thought.org) Received: (from kline@localhost) by sage.thought.org (8.13.6/8.13.1/Submit) id k8E4vPkH094101; Wed, 13 Sep 2006 21:57:25 -0700 (PDT) (envelope-from kline) Date: Wed, 13 Sep 2006 21:57:25 -0700 From: Gary Kline To: Tony Maher Message-ID: <20060914045725.GB92358@thought.org> References: <200609130905.k8D95idk062789@lurza.secnetix.de> <4507CC9B.60704@sun-fish.com> <20060913234934.GA92067@thought.org> <45089D47.6070005@uts.edu.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45089D47.6070005@uts.edu.au> X-Organization: Thought Unlimited. Public service Unix since 1986. X-Of_Interest: Observing twenty years of service to the Unix community User-Agent: Mutt/1.5.11 Cc: Gary Kline , freebsd-stable@freebsd.org, Stefan Lambrev Subject: Re: optimization levels for 6-STABLE build{kernel,world} X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Sep 2006 04:57:34 -0000 On Thu, Sep 14, 2006 at 10:07:35AM +1000, Tony Maher wrote: > Gary Kline wrote: > > > > > > > A couple of things. Will having gcc unroll loops have any > > negative consequences? (I can't imagine how:: but better > > informed than to have something crash inexplicability.) > > With 6.X safe at -O2 and with -funroll-loops, that should be > > a slight gain, right? (It also will make an upgrade from 5.5 > > to 6.[12] that much more rational.) > > -funroll-loops affect loader see > http://lists.freebsd.org/pipermail/freebsd-stable/2006-September/028145.html > Right. This is probably what Chuck Swiger was talking about. I've never had this problems on my 5.[345] releases. And not with 6.1 (knock-wood!!). I've just upgraded to -RELEASE and going to rebuild overnight on the server that traped out. With -funroll-loops gone :-) gary > -- > tonym -- Gary Kline kline@thought.org www.thought.org Public service Unix