From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: 33% speed up in CC Mode scrolling. Date: Tue, 28 Jun 2016 09:18:11 +0000 Message-ID: <20160628091811.GA3181@acm.fritz.box> References: <20160615222015.GA4813@acm.fritz.box> <5770C84E.30208@gmx.at> <83h9cey4t3.fsf@gnu.org> <57715AE5.3030109@gmx.at> <83furyxwc1.fsf@gnu.org> <577233F8.3000603@gmx.at> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1467105772 21983 80.91.229.3 (28 Jun 2016 09:22:52 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 28 Jun 2016 09:22:52 +0000 (UTC) Cc: Eli Zaretskii , johnw@gnu.org, emacs-devel@gnu.org To: martin rudalics Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jun 28 11:22:46 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bHpEA-000346-RX for ged-emacs-devel@m.gmane.org; Tue, 28 Jun 2016 11:22:42 +0200 Original-Received: from localhost ([::1]:35275 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHpE9-00061I-S7 for ged-emacs-devel@m.gmane.org; Tue, 28 Jun 2016 05:22:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37906) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHp9o-0001SA-Dz for emacs-devel@gnu.org; Tue, 28 Jun 2016 05:18:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHp9i-0006pb-Ey for emacs-devel@gnu.org; Tue, 28 Jun 2016 05:18:11 -0400 Original-Received: from mail.muc.de ([193.149.48.3]:45856) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHp9i-0006ox-4p for emacs-devel@gnu.org; Tue, 28 Jun 2016 05:18:06 -0400 Original-Received: (qmail 90043 invoked by uid 3782); 28 Jun 2016 09:18:04 -0000 Original-Received: from acm.muc.de (p4FC46485.dip0.t-ipconnect.de [79.196.100.133]) by colin.muc.de (tmda-ofmipd) with ESMTP; Tue, 28 Jun 2016 11:18:02 +0200 Original-Received: (qmail 3190 invoked by uid 1000); 28 Jun 2016 09:18:11 -0000 Content-Disposition: inline In-Reply-To: <577233F8.3000603@gmx.at> User-Agent: Mutt/1.5.24 (2015-08-30) X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x X-Received-From: 193.149.48.3 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:204854 Archived-At: Hello, Martin. On Tue, Jun 28, 2016 at 10:23:20AM +0200, martin rudalics wrote: > >> By leaning on the key which runs ‘scroll-up-command’. > > Then don't lean. > Old habits die hard. And it's only C buffers causing problems here. > > Once you get past the initial large comment, the scrolling becomes > > more responsive. And I definitely do see a visible speedup when I set > > font-lock-maximum-decoration to 2. > I can't because the display still freezes. Please set `fast-but-imprecise-scrolling' to non-nil. This is intended precisely to prevent the display freezing when font-locking a screen takes longer than the repeat period of an auto-repeat keyboard. > martin -- Alan Mackenzie (Nuremberg, Germany).