From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Gemini Lasswell Newsgroups: gmane.emacs.devel Subject: Re: scratch/accurate-warning-pos: Solid progress: the branch now bootstraps. Date: Tue, 27 Nov 2018 16:53:04 -0800 Message-ID: <874lc2hvkf.fsf@runbox.com> References: <20181125193050.GH27152@ACM> <2c2ae483-3309-f79d-07a5-30af1f49058b@cs.ucla.edu> <20181125212920.GK27152@ACM> <60ac9dfc-b540-89f9-68ea-ec7cceaa8511@cs.ucla.edu> <83in0kijz0.fsf@gnu.org> <9e216e61-7d95-94f0-cbee-593b4f32ced2@cs.ucla.edu> <20181126184359.GG4030@ACM> <55044caa-18fb-9e9a-81b4-3912f64d0aa4@cs.ucla.edu> <20181127074336.GA4705@ACM> <0ec5806a-0cc6-8b9f-6bc2-97875e36a511@cs.ucla.edu> <20181127211539.GB4705@ACM> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1543367192 17519 195.159.176.226 (28 Nov 2018 01:06:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 28 Nov 2018 01:06:32 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.90 (gnu/linux) Cc: cpitclaudel@gmail.com, Paul Eggert , michael_heerdegen@web.de, emacs-devel@gnu.org, monnier@IRO.UMontreal.CA, Eli Zaretskii To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Nov 28 02:06:28 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gRoJ6-0004N1-G0 for ged-emacs-devel@m.gmane.org; Wed, 28 Nov 2018 02:06:24 +0100 Original-Received: from localhost ([::1]:45302 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRoLC-0003kG-J7 for ged-emacs-devel@m.gmane.org; Tue, 27 Nov 2018 20:08:34 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52715) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRoKs-0002do-43 for emacs-devel@gnu.org; Tue, 27 Nov 2018 20:08:19 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gRo6v-0002SR-Ic for emacs-devel@gnu.org; Tue, 27 Nov 2018 19:53:53 -0500 Original-Received: from aibo.runbox.com ([91.220.196.211]:37202) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gRo6v-0002Rj-83; Tue, 27 Nov 2018 19:53:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=runbox.com; s=rbselector1; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From; bh=h5Ss5hGrKEPHvuqT0bY0s5tjYoP6ftomFbXzstd4nSM=; b=g9MUo1KOqW5U50py6eCrEjE0WN itBn7/jiUichU5ssmUjtxwkQciDECIBvSiEMQy+Sbt9jv8jFFma43Tl/2slu8WeBRTIfHK70DQ8Nu 6lLmiphY/NKKIwqdQv2T89VrmwYaGOVKu8VWNsFYT4o92fNJ6f9G+HdCOWuRWwUZpKawZZ5vzcSfh fNZm2dp8J+Qi9tSrijxJFBfWX9RAY+IlyFg/a5tpFKmhf/XnodufBSwdiMadR2yimnh1UQqpcYa92 5OwxS4u8HU8LMSPRZKow2VegSNByhSUcG7G5ss41LOoMZuV7+FR1HsBtnAdkO+GDSHLAiGWVXfG3c gXH1FVjQ==; Original-Received: from [10.9.9.212] (helo=mailfront12.runbox.com) by mailtransmit02.runbox with esmtp (Exim 4.86_2) (envelope-from ) id 1gRo6p-0003rk-WA; Wed, 28 Nov 2018 01:53:44 +0100 Original-Received: by mailfront12.runbox.com with esmtpsa (uid:179284 ) (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) id 1gRo6F-0000AI-Na; Wed, 28 Nov 2018 01:53:08 +0100 In-Reply-To: <20181127211539.GB4705@ACM> (Alan Mackenzie's message of "Tue, 27 Nov 2018 21:15:39 +0000") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 91.220.196.211 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:231465 Archived-At: Alan Mackenzie writes: > On Tue, Nov 27, 2018 at 12:27:36 -0800, Paul Eggert wrote: >> On 11/26/18 11:43 PM, Alan Mackenzie wrote: >> > Emacs used to work OK on machines 10, 100 times slower than what we have today. > >> That was back before Emacs did things like automatic syntax >> highlighting. Today's Emacs would have been rejected for use on >> those older machines. > >> Alas, we cannot assume that single-threaded computation will continue to >> improve at the same rate it improved in the past, as the single-threaded >> performance-vs-time curve is flattening out. See, for example: > >> https://imgur.com/a/FVLjs > > That's all pretty much irrelevant to the task at hand. The fact is, > Emacs users will be using computers of a wide range of power. Probably > as much as a factor of 10. Compared with this, a 10%, or even a 20% > slowdown, while not being good, will hardly be noticed. It might not be if you're running emacs -Q. But I'd rather we make Emacs core as fast as possible so that the package authors who give us org-mode and fuzzy search and in-buffer completion can make their packages do more before responsiveness becomes a problem. Also, new Spectre variants keep making the news, as well as news of the performance costs of their mitigation in the kernel. CPU performance might be going backwards for a while.