From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Script for compiling more quietly Date: Mon, 14 Dec 2020 19:49:42 +0200 Message-ID: <83y2i0b7m1.fsf@gnu.org> References: <87czzg8b8v.fsf@gnus.org> <87y2i0310m.fsf@gnus.org> <838sa0crfn.fsf@gnu.org> <83zh2gbaeb.fsf@gnu.org> <87r1nsz5ux.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28469"; mail-complaints-to="usenet@ciao.gmane.io" Cc: ghe@sdf.org, monnier@iro.umontreal.ca, emacs-devel@gnu.org To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Dec 14 18:51:15 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 1kos0A-0007ID-Mo for ged-emacs-devel@m.gmane-mx.org; Mon, 14 Dec 2020 18:51:14 +0100 Original-Received: from localhost ([::1]:58938 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kos09-0007wF-Os for ged-emacs-devel@m.gmane-mx.org; Mon, 14 Dec 2020 12:51:13 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37614) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1koryr-0006xB-Td for emacs-devel@gnu.org; Mon, 14 Dec 2020 12:49:53 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:56682) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1koryq-0006Dm-TH; Mon, 14 Dec 2020 12:49:53 -0500 Original-Received: from [176.228.60.248] (port=2228 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1koryq-00055Y-8V; Mon, 14 Dec 2020 12:49:52 -0500 In-Reply-To: <87r1nsz5ux.fsf@gnus.org> (message from Lars Ingebrigtsen on Mon, 14 Dec 2020 17:53:42 +0100) 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:260824 Archived-At: > From: Lars Ingebrigtsen > Cc: Gregory Heytings , monnier@iro.umontreal.ca, > emacs-devel@gnu.org > Date: Mon, 14 Dec 2020 17:53:42 +0100 > > Eli Zaretskii writes: > > > In which case I don't understand why it is important to be accurate > > with the actual number of cores. You could just use 4 as the default. > > The default should be sensible, and the sensible default is "all the > cores". -j4 on a system with two cores would be slower than -j2. How many people who regularly build Emacs have 2 cores? And I don't think it's true that -j4 on such a system will be slower, certainly not significantly slower. I build my Emacs with -j8 on a system with 4 cores all the time, and never saw any slowdown. Anyway, it isn't worth an argument, so I will now bow out.