From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Time to drop the pre-dump phase in the build? Date: Fri, 10 Jan 2014 14:51:30 -0500 Message-ID: References: <20140110191530.5772E38019B@snark.thyrsus.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1389383612 18431 80.91.229.3 (10 Jan 2014 19:53:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 10 Jan 2014 19:53:32 +0000 (UTC) Cc: emacs-devel@gnu.org To: esr@thyrsus.com (Eric S. Raymond) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jan 10 20:53:38 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1W1i9B-0003rH-EA for ged-emacs-devel@m.gmane.org; Fri, 10 Jan 2014 20:53:37 +0100 Original-Received: from localhost ([::1]:58758 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W1i9B-0006hZ-3o for ged-emacs-devel@m.gmane.org; Fri, 10 Jan 2014 14:53:37 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56707) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W1i90-0006fE-KQ for emacs-devel@gnu.org; Fri, 10 Jan 2014 14:53:33 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W1i8s-0000Nl-J5 for emacs-devel@gnu.org; Fri, 10 Jan 2014 14:53:26 -0500 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.181]:23185) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W1i79-0007yf-5Q for emacs-devel@gnu.org; Fri, 10 Jan 2014 14:51:31 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av4EABK/CFFFxKG9/2dsb2JhbABEvw4Xc4IeAQEEAVYjBQsLNBIUGA2IQgbBLZEKA4hhnBmBXoMV X-IPAS-Result: Av4EABK/CFFFxKG9/2dsb2JhbABEvw4Xc4IeAQEEAVYjBQsLNBIUGA2IQgbBLZEKA4hhnBmBXoMV X-IronPort-AV: E=Sophos;i="4.84,565,1355115600"; d="scan'208";a="44669782" Original-Received: from 69-196-161-189.dsl.teksavvy.com (HELO pastel.home) ([69.196.161.189]) by ironport2-out.teksavvy.com with ESMTP/TLS/ADH-AES256-SHA; 10 Jan 2014 14:51:30 -0500 Original-Received: by pastel.home (Postfix, from userid 20848) id 20CE96045A; Fri, 10 Jan 2014 14:51:30 -0500 (EST) In-Reply-To: <20140110191530.5772E38019B@snark.thyrsus.com> (Eric S. Raymond's message of "Fri, 10 Jan 2014 14:15:30 -0500 (EST)") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 206.248.154.181 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:168036 Archived-At: > If anybody wants to own this problem, comparative benchmarking seems > like a good place to start. That is, hard numbers about the > actual performance effects of pre-dumping. That'd head off a > lot of arguments, anyway. On my main desktop machine (AMD E350 with 6GB of RAM): time src/temacs --batch => 10s time src/emacs --batch => 0.07s This is on a Samsung 840 SSD. So, as long as the real startup (GUI and .emacs) takes less than 10s, I think this idea is a non-starter. Stefan