From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: 26.2; Strange slowness in some Info nodes
Date: Fri, 02 Aug 2019 21:53:43 +0300
Message-ID: <837e7vflfs.fsf@gnu.org>
References: <Axvg1g.huuIFOYZps.phJUTTX544aUaguVABt@freemail.hu>
Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226";
	logging-data="265627"; mail-complaints-to="usenet@blaine.gmane.org"
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Aug 02 20:55:55 2019
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([209.51.188.17])
	by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.89)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1htciV-0016ra-Kg
	for geh-help-gnu-emacs@m.gmane.org; Fri, 02 Aug 2019 20:55:51 +0200
Original-Received: from localhost ([::1]:37006 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.86_2)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1htciS-0004C1-Ps
	for geh-help-gnu-emacs@m.gmane.org; Fri, 02 Aug 2019 14:55:49 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40056)
 by lists.gnu.org with esmtp (Exim 4.86_2)
 (envelope-from <eliz@gnu.org>) id 1htcge-0004A5-2G
 for help-gnu-emacs@gnu.org; Fri, 02 Aug 2019 14:53:57 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:44028)
 by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@gnu.org>)
 id 1htcgZ-0000O9-Cj
 for help-gnu-emacs@gnu.org; Fri, 02 Aug 2019 14:53:51 -0400
Original-Received: from [176.228.60.248] (port=3401 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256)
 (Exim 4.82) (envelope-from <eliz@gnu.org>) id 1htcgV-0004Zv-AN
 for help-gnu-emacs@gnu.org; Fri, 02 Aug 2019 14:53:49 -0400
In-reply-to: <Axvg1g.huuIFOYZps.phJUTTX544aUaguVABt@freemail.hu> (message from
 ndame on Fri, 2 Aug 2019 15:37:52 +0000 (GMT))
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
 <mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
 <mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Original-Sender: "help-gnu-emacs"
 <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Xref: news.gmane.org gmane.emacs.help:121295
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/121295>

> Date: Fri, 2 Aug 2019 15:37:52 +0000 (GMT)
> From: ndame <emacsuser@freemail.hu>
> 
> I recently moved to emacs 26 and today I noticed a strange
> scrolling slowdown in certain Info nodes.
> 
> It also occurs with emacs -q.
> 
> If I go to Elisp info and try to scroll in the main index with
> page up/down then everything is fine and quick.
> 
> If I go to Lists and then to Building Lists and there try to
> scroll down with page down, then the scrolling becomes slow, like
> it takes one second for emacs to scroll the page after pressing
> page down/up.

Crystal ball says it's related to the fonts you use.  Does setting
inhibit-compacting-font-caches to a non-nil value help?