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#45898: 27.1; wedged in redisplay again Date: Sat, 25 Jun 2022 15:54:25 +0300 Message-ID: <8335fsc39a.fsf@gnu.org> References: <46b65e3f-cf3d-a3f2-9a9a-100e58274ff6@jovi.net> <8335gf5er3.fsf@gnu.org> <87leu686z4.fsf@gnus.org> <83sfoe2k0j.fsf@gnu.org> <87zgim6qtt.fsf@gnus.org> <83mtem2dc9.fsf@gnu.org> <87y1y63qmq.fsf@gnus.org> <83h74t3k5u.fsf@gnu.org> <87tu8sx569.fsf@gnus.org> <83v8t6us8t.fsf@gnu.org> <87zgiinptk.fsf@gnus.org> <83mteiufih.fsf@gnu.org> <877d5kojbo.fsf@gnus.org> <83zgigu3e0.fsf@gnu.org> <500e4b9c69f2a90e7cf05b956178d71b@webmail.orcon.net.nz> <835yl3tnv3.fsf@gnu.org> <83iloyo0x7.fsf@gnu.org> <83mte5jukr.fsf@gnu.org> <837d57gbed.fsf@gnu.org> <83o7yicx3p.fsf@gnu.org> <0B5FE52E-BC81-4A05-86F1-91C6AFCB6F7D@gmail.com> <83r13db6hp.fsf@gnu.org> <56F03F59-40AD-48F2-92C8-9858C2423327@gmail.com> <83a6a1awv0.fsf@gnu.org> <835ykpasm2.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18142"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 45898@debbugs.gnu.org To: Gerd =?UTF-8?Q?M=C3=B6llmann?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jun 25 14:55:49 2022 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 1o55KG-0004bW-Fq for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 25 Jun 2022 14:55:48 +0200 Original-Received: from localhost ([::1]:46108 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o55KE-0006jg-SP for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 25 Jun 2022 08:55:46 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51064) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o55JW-0006jR-W2 for bug-gnu-emacs@gnu.org; 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Original-Received: from [87.69.77.57] (port=2627 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 1o55Iy-0006AA-KK; Sat, 25 Jun 2022 08:54:30 -0400 In-Reply-To: (message from Gerd =?UTF-8?Q?M=C3=B6llmann?= on Sat, 25 Jun 2022 14:20:52 +0200) 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" Xref: news.gmane.io gmane.emacs.bugs:235263 Archived-At: > From: Gerd Möllmann > Date: Sat, 25 Jun 2022 14:20:52 +0200 > Cc: 45898@debbugs.gnu.org > > > > > Yes, I know; and it's still the case. Originally, I indeed only > > looked at redisplaying_p. But then cases with C-n and C-v wouldn't be > > caught, because these commands, although they call the display code, > > run without redisplay_internal in the call stack. And very sluggish > > response from these and similar commands is generally perceived as > > "redisplay problems". So I wanted to catch them as well, without > > waiting for redisplay cycle they cause (which by itself may or may not > > be "too slow" -- just moving the cursor is an optimization there, as > > you know). > > Do you have a recipe for reproducing that? > > I might take at look into this, if/when I manage to debug Emacs on my M1. In https://debbugs.gnu.org/cgi/bugreport.cgi?bug=45898#80 Phil Sainty shared URLs for some files that are notoriously slow to display (and originally were the motivation for developing and improving the so-long-mode). Try C-n and C-v with any of them. This message: https://lists.gnu.org/archive/html/help-gnu-emacs/2022-05/msg00070.html mentions another problematic file. With it, you need first to arrive to buffer position 135,000, before C-n/C-v become sluggish. These are the sample files I used to test the implementation of this feature.