From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Script for compiling more quietly Date: Mon, 14 Dec 2020 10:00:49 -0500 Message-ID: References: <87czzg8b8v.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="565"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Gregory Heytings , Lars Ingebrigtsen To: Gregory Heytings via "Emacs development discussions." Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Dec 14 16:02:29 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 1kopMr-000Abw-Lu for ged-emacs-devel@m.gmane-mx.org; Mon, 14 Dec 2020 16:02:29 +0100 Original-Received: from localhost ([::1]:55500 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kopMq-0007UZ-Jo for ged-emacs-devel@m.gmane-mx.org; Mon, 14 Dec 2020 10:02:28 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49054) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kopLP-0006Hc-8v for emacs-devel@gnu.org; Mon, 14 Dec 2020 10:00:59 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:2424) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kopLM-0002Lt-H6 for emacs-devel@gnu.org; Mon, 14 Dec 2020 10:00:58 -0500 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id B8E8A1002B8; Mon, 14 Dec 2020 10:00:55 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 39E5A100018; Mon, 14 Dec 2020 10:00:50 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1607958050; bh=h1hhTAU2XRRJpYcZbOltRZ95hQDritv8tkNbyKjZq2w=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=ilidYppO7amRmEsVD29erv/uA9S7i1KW1vBZdwxfwnQXsIHGnzbCoGZbhwuspvr4I Hyz3vye2BqLs1E1+rn56Mggir/1Iy3IREyx6XA7zPUuStUv8lh2DqoDVeidbIEpBXA xHtG1wdaXYMuxaBZ/L/Z+8nOmsfRLOBQjtmNXCFLuFfUVjxPwxA5WasqxzjZmA/kT5 6A7q5ZVyIhU8TdzCgZ65MbzTVd9w3DLh+Y57COnNXdMWs8mZg36sagO3LhbtCZshez OL0EDjoHmkti4WhjcRymFzSGjowuHNd9MlYzXeU0Uoa+EyWX2fBAwxwBlG4aV7DAcf uEwE96T0aQ1Pw== Original-Received: from alfajor (69-165-136-52.dsl.teksavvy.com [69.165.136.52]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 050D81202E2; Mon, 14 Dec 2020 10:00:49 -0500 (EST) In-Reply-To: (Gregory Heytings via's message of "Mon, 14 Dec 2020 10:32:36 +0000") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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:260804 Archived-At: > by "expr $(nproc) / 2 + 1", IME using nproc makes the computer unuseable, > and is not much faster than nproc/2+1. My crystal ball tells me you have hyperthreading, so `nproc` returns twice as many CPUs as you have "cores". If you don't have hyperthreading, I'd expect the performance difference between using `nproc` or only half to be more significant. Stefan