From owner-freebsd-hackers@FreeBSD.ORG Wed Jan 26 16:40:43 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C3949106566B for ; Wed, 26 Jan 2011 16:40:43 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 93ECD8FC14 for ; Wed, 26 Jan 2011 16:40:43 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id DD43846B0D; Wed, 26 Jan 2011 11:40:42 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 18D408A009; Wed, 26 Jan 2011 11:40:42 -0500 (EST) From: John Baldwin To: freebsd-hackers@freebsd.org Date: Wed, 26 Jan 2011 11:40:13 -0500 User-Agent: KMail/1.13.5 (FreeBSD/7.4-CBSD-20110107; KDE/4.4.5; amd64; ; ) References: <20110125234911.223d8f75@kan.dnsalias.net> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201101261140.14024.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (bigwig.baldwin.cx); Wed, 26 Jan 2011 11:40:42 -0500 (EST) X-Virus-Scanned: clamav-milter 0.96.3 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.9 required=4.2 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on bigwig.baldwin.cx Cc: Mark Felder Subject: Re: rtld optimizations X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Jan 2011 16:40:43 -0000 On Wednesday, January 26, 2011 10:25:27 am Mark Felder wrote: > On Tue, 25 Jan 2011 22:49:11 -0600, Alexander Kabaev > wrote: > > > The only extra quirk that said commit > > does is an optimization of a dlsym() call, which is hardly ever in > > critical performance path. > > It's really not my place to say, but it seems strange that if an > optimization is available people would ignore it because they don't think > it's important enough. I don't understand this mentality; if it's not > going to break anything and it obviously can improve performance in > certain use cases, why not merge it and make FreeBSD even better? Many things that seem obvious aren't actually true, hence the need for actual testing and benchmarks. -- John Baldwin