From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#21453: 25.0.50; When font size is temporarily increased Emacs is slow Date: Fri, 11 Sep 2015 16:47:41 +0300 Message-ID: <83zj0t2hky.fsf@gnu.org> References: <87wpvymwbl.fsf@openmailbox.org> <838u8e5lju.fsf@gnu.org> <877fnxducn.fsf@openmailbox.org> <8337yl3zjy.fsf@gnu.org> <8737yldsye.fsf@openmailbox.org> Reply-To: Eli Zaretskii 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 1441979365 18340 80.91.229.3 (11 Sep 2015 13:49:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 11 Sep 2015 13:49:25 +0000 (UTC) Cc: 21453@debbugs.gnu.org To: Mark Karpov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Sep 11 15:49:13 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1ZaOhT-0008N7-8o for geb-bug-gnu-emacs@m.gmane.org; Fri, 11 Sep 2015 15:49:11 +0200 Original-Received: from localhost ([::1]:56453 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaOhS-0000cW-Ph for geb-bug-gnu-emacs@m.gmane.org; Fri, 11 Sep 2015 09:49:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44164) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaOhO-0000bj-UE for bug-gnu-emacs@gnu.org; Fri, 11 Sep 2015 09:49:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZaOhJ-0004Bu-TG for bug-gnu-emacs@gnu.org; Fri, 11 Sep 2015 09:49:06 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:35868) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaOhJ-0004Bp-QH for bug-gnu-emacs@gnu.org; Fri, 11 Sep 2015 09:49:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1ZaOhJ-0008Iy-MS for bug-gnu-emacs@gnu.org; Fri, 11 Sep 2015 09:49:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 11 Sep 2015 13:49:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 21453 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 21453-submit@debbugs.gnu.org id=B21453.144197929231864 (code B ref 21453); Fri, 11 Sep 2015 13:49:01 +0000 Original-Received: (at 21453) by debbugs.gnu.org; 11 Sep 2015 13:48:12 +0000 Original-Received: from localhost ([127.0.0.1]:56311 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZaOgV-0008Hr-U0 for submit@debbugs.gnu.org; Fri, 11 Sep 2015 09:48:12 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:38855) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZaOgT-0008Hi-1Z for 21453@debbugs.gnu.org; Fri, 11 Sep 2015 09:48:10 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NUI00600M7J3000@a-mtaout20.012.net.il> for 21453@debbugs.gnu.org; Fri, 11 Sep 2015 16:47:48 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NUI006CJMBO2D10@a-mtaout20.012.net.il>; Fri, 11 Sep 2015 16:47:48 +0300 (IDT) In-reply-to: <8737yldsye.fsf@openmailbox.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:106419 Archived-At: > From: Mark Karpov > Cc: 21453@debbugs.gnu.org > Date: Fri, 11 Sep 2015 18:46:33 +0600 > > Eli Zaretskii writes: > > > How much slower it is? > > Hard to tell. I don't know how to measure this properly. From subjective > perception it's slow enough to be noticed when I hold ‘C-n’. One way to measure it is to write a simple Lisp function that scrolls with next-line to the end of a long buffer, and measures the time it takes to do that. Then run it and show the results. (Some slow-down is expected because a larger font with the same window dimensions means more scrolls, but you can alleviate that effect to some extent by enlarging the window to have the same number of visible lines.) > > Also, what text is in the buffer that you are using in your recipe? > > Does it use more than one font? > > No it doesn't. I tried it with normal text, something from my > configuration. I can only tell that it happens even when text doesn't > have long lines (beyond 80 characters). Just checked this out. > > I think the text itself is not that important. Does the text have faces other than the default face? What modes were active in that buffer? Do you see the same slow-down in a buffer that's in Fundamental mode?