From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Ralf Jung Newsgroups: gmane.emacs.bugs Subject: bug#21028: Slow font rendering in emacs Date: Tue, 14 Mar 2017 19:50:22 +0100 Message-ID: References: <559F9FAF.8090708@live.com> <83zigpayz8.fsf@gnu.org> <83tw6wc3mz.fsf@gnu.org> <3c939f8c-8f78-12b8-3e07-242aa6dd12be@ralfj.de> <83a88nbx79.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1489517478 1141 195.159.176.226 (14 Mar 2017 18:51:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 14 Mar 2017 18:51:18 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 Cc: 21028@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Mar 14 19:51:08 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1cnrXG-0007ZE-Sb for geb-bug-gnu-emacs@m.gmane.org; Tue, 14 Mar 2017 19:51:07 +0100 Original-Received: from localhost ([::1]:33034 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnrXL-0003ma-D2 for geb-bug-gnu-emacs@m.gmane.org; Tue, 14 Mar 2017 14:51:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:40568) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnrXF-0003mV-Fh for bug-gnu-emacs@gnu.org; Tue, 14 Mar 2017 14:51:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cnrXC-0003Oy-9p for bug-gnu-emacs@gnu.org; Tue, 14 Mar 2017 14:51:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:57756) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cnrXC-0003Oe-2X for bug-gnu-emacs@gnu.org; Tue, 14 Mar 2017 14:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1cnrXB-0001I3-Om for bug-gnu-emacs@gnu.org; Tue, 14 Mar 2017 14:51:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Ralf Jung Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 14 Mar 2017 18:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 21028 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 21028-submit@debbugs.gnu.org id=B21028.14895174314922 (code B ref 21028); Tue, 14 Mar 2017 18:51:01 +0000 Original-Received: (at 21028) by debbugs.gnu.org; 14 Mar 2017 18:50:31 +0000 Original-Received: from localhost ([127.0.0.1]:55955 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cnrWh-0001HJ-Ld for submit@debbugs.gnu.org; Tue, 14 Mar 2017 14:50:31 -0400 Original-Received: from eins.ralfj.de ([85.214.220.216]:49922) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cnrWg-0001H7-83 for 21028@debbugs.gnu.org; Tue, 14 Mar 2017 14:50:30 -0400 Original-Received: from [192.168.1.110] (p54A58A74.dip0.t-ipconnect.de [84.165.138.116]) by mx.ralfj.de (Postfix) with ESMTPSA id E4EE217D000F; Tue, 14 Mar 2017 19:50:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=ralfj.de; s=mail; t=1489517424; bh=k/YSL5Fbptqd6wsI4tGjJwRdd68nDAE1Lqfgz5V5Zoo=; h=Subject:To:References:Cc:From:Date:In-Reply-To:From; b=4I0/5YQ894O+LNRyKpbjxdTqmt3Y/sdWAc/Ge3Y9r57GbO2z/5ak+DZND67bVtIrx 4zyA52avQ8S+KJJBaIkg2WOEo/96QA1YcmUdPMaZrzNWXzUgCv7wLrg28S7jY7d+q9 xU7X36cp3rw+KE3OHaw65pKQfyQKTWxZEXzTkBc0= In-Reply-To: <83a88nbx79.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:130589 Archived-At: Hi, >> Okay, so what I do as actually quite simple: I open the aforementioned >> file in emacs, and then I use the scroll wheel on my mouse to scroll >> around quickly (move wheel up fast - move wheel down fast - repeat). >> When I do this with the "good" setup, text keeps flying over my screen >> and everything reacts instantaneously. When I do this with the "bad" >> setup, nothing moves until I stop turning the scroll wheel and wait a >> little more, where the waiting time is roughly half the time I spent >> scrolling quickly. > > In the "bad" setup, if you press C-n just once, how much time does it > take for Emacs to react? One second, 10 sec, more? Same question > regarding C-v. This takes no noticeable time (<0.1s). > I see. Well, I don't think there are many fonts out there with good > coverage of symbols, punctuation, and other special characters, that > are monospaced. Certainly not free fonts. I don't think that's true. The combination of Fira Sans Mono and DejaVu Mono covers all characters I mentioned, and all characters I ever needed so far (including even ✓), except for ∖. > Note that the above is probably relevant to Emacs 25.1 and later (the > first item definitely), so I suggest to upgrade, because this stuff > should work much better in Emacs 25, and some of your problems might > just go away without any need for customization. I noticed that emacs 25.1 is also available in Debian testing, so I'll upgrade and report on my observations. Kind regards, Ralf