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: Optimizing tty display update (was: Implementing image support for kitty terminal) Date: Sat, 10 Sep 2022 10:13:16 -0400 Message-ID: References: <835yhwd3z4.fsf@gnu.org> <88387d9e-3717-fd62-9912-bfd571250033@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2603"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Eli Zaretskii , tomas@tuxteam.de, emacs-devel@gnu.org To: Gerd =?windows-1252?Q?M=F6llmann?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Sep 10 16:14:36 2022 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 1oX1Fj-0000Ra-Lw for ged-emacs-devel@m.gmane-mx.org; Sat, 10 Sep 2022 16:14:35 +0200 Original-Received: from localhost ([::1]:56590 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oX1Fi-0007yp-5k for ged-emacs-devel@m.gmane-mx.org; Sat, 10 Sep 2022 10:14:34 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54522) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oX1Eg-0007Ih-DB for emacs-devel@gnu.org; Sat, 10 Sep 2022 10:13:30 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:18820) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oX1Ed-0004Sj-52; Sat, 10 Sep 2022 10:13:29 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 9FD5E100120; Sat, 10 Sep 2022 10:13:24 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 141EB1000EF; Sat, 10 Sep 2022 10:13:23 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1662819203; bh=rK0IoM4bc22IX8fp2JkOV8+Ej5gZBiKBJC+Hw9TFczs=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=SVyCBY3JTL+vIM3YLtAsZVjYJp+954s6aIvwmEk/kY4O3mJLMrVIqosRXXdTOkTsv Zfy4aDZ+yC2SdPTwYp2yBg8f2eS6JoBTrwfnFiX4UeU/sQ69xNPANGUll7V7xZByYN Y5UqXdQ3PIr5Rw32ft03U5Iw7O/SYdOlIFO03vs0fPIvKVhjG8X7Eck5Z9X2uD9gat EfBogLFxDMwR0EHs30JL4a+u8fiec5/L2YgJmwqVFUA71sK4fx5DiBCZH9KkgBQNVC ncA3wx9jqVsH6VeUXFf+ZECym6xD4OxN1C+UAtrIDe1ZUYApNleG/gGUFL6czjA1Se ylO3ZSopFPcOw== Original-Received: from pastel (unknown [157.52.9.190]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id C92441208E8; Sat, 10 Sep 2022 10:13:22 -0400 (EDT) In-Reply-To: ("Gerd =?windows-1252?Q?M=F6l?= =?windows-1252?Q?lmann=22's?= message of "Sat, 10 Sep 2022 09:52:57 +0200") 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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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:295122 Archived-At: > BTW, do you have a slow connection you could use to test larger stream > buffer sizes with, at least anecdotally? No, sorry, I can't remember the last time I had a connection for which optimizing the amount of data sent to the terminal to update the screen could have made a difference. The closest I can remember is a discussion around `baud-rate` and `isearch-slow-terminal-mode`: https://lists.gnu.org/archive/html/emacs-devel/2020-10/msg01639.html > If we remove the flushes, except at the end of the update, and give > the output stream a large buffer (setvbuf, or something), we could at > least get some impression if that may benefit users. I can't think of any reason why it would make the behavior worse and it would simplify the code, so I'm all for it. Stefan