From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Performance degradation from long lines Date: Thu, 25 Oct 2018 18:02:30 +0300 Message-ID: <83k1m6qdbt.fsf@gnu.org> References: NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1540483597 7118 195.159.176.226 (25 Oct 2018 16:06:37 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 25 Oct 2018 16:06:37 +0000 (UTC) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Oct 25 18:06:33 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 1gFi9X-0001ho-Ep for ged-emacs-devel@m.gmane.org; Thu, 25 Oct 2018 18:06:31 +0200 Original-Received: from localhost ([::1]:55425 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gFiBd-0005Zi-L3 for ged-emacs-devel@m.gmane.org; Thu, 25 Oct 2018 12:08:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35209) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gFh9k-0000oS-4W for emacs-devel@gnu.org; Thu, 25 Oct 2018 11:02:40 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gFh9e-0004sL-L1 for emacs-devel@gnu.org; Thu, 25 Oct 2018 11:02:38 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:44569) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gFh9d-0004rY-NV; Thu, 25 Oct 2018 11:02:34 -0400 Original-Received: from [176.228.60.248] (port=2972 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1gFh9a-0008Ez-Nx; Thu, 25 Oct 2018 11:02:32 -0400 In-reply-to: (message from Stefan Monnier on Wed, 24 Oct 2018 20:27:10 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:230662 Archived-At: > From: Stefan Monnier > Date: Wed, 24 Oct 2018 20:27:10 -0400 > > AFAIK there are *several* unrelated features that can cause very serious > slow downs in the presence of long lines. So we need to attack them one > by one. "Attack" in what sense? If you mean something similar to what so-long mode does, i.e. turn off those features, then I think we should simply add that mode to core Emacs. If you mean something else, please give some idea regarding the "attack" approach. Personally, I think any real solution (as opposed to band-aids) of this issue should "attack" the root cause. (Not that I'm opposed to having band-aids as interim solutions as long as we don't have anything better.) So if someone is interested, I can describe in more detail the root cause for the slow redisplay in these cases.