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.bugs Subject: bug#62352: Very slow scroll-down-line with a lot of text properties Date: Sat, 25 Mar 2023 14:58:03 +0300 Message-ID: <83sfdtcab8.fsf@gnu.org> References: <51545b85-029c-a6ff-f733-e486f261f6c0@gmail.com> <83355x7sx2.fsf@gnu.org> <08b5f766dd5d453016a7@heytings.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21166"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 62352-done@debbugs.gnu.org, geza.herman@gmail.com To: Gregory Heytings Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Mar 25 13:15:56 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1pg2oN-0005BG-Ky for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 25 Mar 2023 13:15:55 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pg2md-0004G3-NH; Sat, 25 Mar 2023 08:14:07 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pg2ma-0004DX-RM for bug-gnu-emacs@gnu.org; Sat, 25 Mar 2023 08:14:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pg2ma-00029M-Hm for bug-gnu-emacs@gnu.org; Sat, 25 Mar 2023 08:14:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pg2Y2-00045T-Ba for bug-gnu-emacs@gnu.org; Sat, 25 Mar 2023 07:59:02 -0400 Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-To: bug-gnu-emacs@gnu.org Resent-Date: Sat, 25 Mar 2023 11:59:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: cc-closed 62352 X-GNU-PR-Package: emacs Mail-Followup-To: 62352@debbugs.gnu.org, eliz@gnu.org, geza.herman@gmail.com Original-Received: via spool by 62352-done@debbugs.gnu.org id=D62352.167974549515633 (code D ref 62352); Sat, 25 Mar 2023 11:59:02 +0000 Original-Received: (at 62352-done) by debbugs.gnu.org; 25 Mar 2023 11:58:15 +0000 Original-Received: from localhost ([127.0.0.1]:41918 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pg2XH-000445-8E for submit@debbugs.gnu.org; Sat, 25 Mar 2023 07:58:15 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:52660) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pg2XF-00043r-MW for 62352-done@debbugs.gnu.org; Sat, 25 Mar 2023 07:58:14 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pg2XA-0002R0-Bg; Sat, 25 Mar 2023 07:58:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=kgjhWlmP9WRQ7ng/qBy1293fBlYOzP8mE/D3nfROugM=; b=rLAS3/xJv9mj PoB2CYwyf0Tm3QdwiaCxzeXtKZqn9Urabpcls+JyW7l8KqPAqwjgDD8qSZsI7ROMCcLEg5QS4ZbLv Lsx5IIogJnLEH4XOYv666becjlfJpiMiGJ7GRPOeoo4gzZWqWfS299D/3EgoFfIWfEa1SOkK+lUEN dX1jQAfogrszmiT7MiZtZ7lvzRzMI7rb4EIIm+C3pwdwi1oRzJeVZ0AXFldMXoHjUcrkHegicbNdr V4bVrwmXypTANwaAMxhOXvKrbTY+jXwkp2sy9P1eVfocHCL3kHvEtxMyCO4fa/5d0dJIGbuLVCybJ VKiGZ+/Z4C/Mrg/z28mpXQ==; Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pg2X8-0003L4-IT; Sat, 25 Mar 2023 07:58:08 -0400 In-Reply-To: <08b5f766dd5d453016a7@heytings.org> (message from Gregory Heytings on Tue, 21 Mar 2023 21:58:05 +0000) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:258546 Archived-At: > Date: Tue, 21 Mar 2023 21:58:05 +0000 > From: Gregory Heytings > cc: "Herman, Geza" , 62352@debbugs.gnu.org > > > However, are you saying that this is slower in Emacs 29 than it was in > > Emacs 28? If so, bisection will be appreciated. > > FTR, I see the same behavior in Emacs 26, 27, 28 and 29 with that recipe. That figures: the relevant code didn't see any significant changes in the recent years. I also think the impression that C-n/C-p (with scroll-conservatively) are free of this problem is inaccurate. They are a bit faster, indeed, but in my unoptimized build I see the scroll taking almost the same time in both cases, close to 1 sec. I think OP's impression is based on where each of these crosses the threshold of Emacs being able to keep up with the repeated keystrokes, and that depends on both the auto-repeat rate and the CPU power, so it is different on different systems. E.g., in an optimized build I see no stuttering with scroll-down-line, either. So I think there's no bug here we need to look into, and I'm therefore closing this bug report.