From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Andrea Corallo Newsgroups: gmane.emacs.devel Subject: Re: Native compilation: the bird-eye view Date: Sun, 17 May 2020 07:43:42 +0000 Message-ID: References: <83o8qocd32.fsf@gnu.org> <83ftbzdewp.fsf@gnu.org> <87mu67urni.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="13298"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) Cc: Eli Zaretskii , emacs-devel@gnu.org To: Ihor Radchenko Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun May 17 09:44:23 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jaDyA-0003Lu-WD for ged-emacs-devel@m.gmane-mx.org; Sun, 17 May 2020 09:44:23 +0200 Original-Received: from localhost ([::1]:42646 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jaDyA-0001uY-1M for ged-emacs-devel@m.gmane-mx.org; Sun, 17 May 2020 03:44:22 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59112) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jaDxf-0001U7-C7 for emacs-devel@gnu.org; Sun, 17 May 2020 03:43:51 -0400 Original-Received: from mx.sdf.org ([205.166.94.20]:51107) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jaDxe-0004jS-3O; Sun, 17 May 2020 03:43:51 -0400 Original-Received: from sdf.org (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 04H7hgCY023585 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Sun, 17 May 2020 07:43:42 GMT Original-Received: (from akrl@localhost) by sdf.org (8.15.2/8.12.8/Submit) id 04H7hgmk030825; Sun, 17 May 2020 07:43:42 GMT In-Reply-To: <87mu67urni.fsf@localhost> (Ihor Radchenko's message of "Sun, 17 May 2020 12:11:45 +0800") Received-SPF: pass client-ip=205.166.94.20; envelope-from=akrl@sdf.org; helo=mx.sdf.org X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/17 03:43:43 X-ACL-Warn: Detected OS = ??? X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:250572 Archived-At: Ihor Radchenko writes: >> And for the "non-average" user, who builds Emacs from sources? AFAIU, >> native compilation of all Lisp files takes many hours even on fast >> machines -- won't this be an annoyance if we don't come up with a JIT >> mechanism? > > I am using Gentoo and thus compiling pretty much everything from source. > According to my experience so far, compilation takes even more time than > compiling something like chromium. Moreover, I got memory overflow (for > 8Gb RAM) when compiling ja-dic.elc. In order to compile that file, I had > to manually fallback to comp-speed 0. FWIW ja-dic.elc is not anymore compiled and the overall compile time should be reduced by a factor two since you have tried it. Also the memory necessary should be now around 3GB. https://debbugs.gnu.org/cgi/bugreport.cgi?bug=41077#28 I hope we can optimize this number further. Andrea -- akrl@sdf.org