From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: YAMAMOTO Mitsuharu Newsgroups: gmane.emacs.devel Subject: Re: Display performance degradation Date: Fri, 18 Dec 2009 12:06:14 +0900 Organization: Faculty of Science, Chiba University Message-ID: References: <4B2A5F92.9090008@swipnet.se> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=ISO-2022-JP-2 X-Trace: ger.gmane.org 1261105598 7022 80.91.229.12 (18 Dec 2009 03:06:38 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 18 Dec 2009 03:06:38 +0000 (UTC) Cc: emacs-devel@gnu.org, Kenichi Handa To: Jan =?ISO-8859-1?Q?Dj=E4rv?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Dec 18 04:06:31 2009 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1NLTAk-0001Z4-62 for ged-emacs-devel@m.gmane.org; Fri, 18 Dec 2009 04:06:30 +0100 Original-Received: from localhost ([127.0.0.1]:51052 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NLTAk-0000bx-8i for ged-emacs-devel@m.gmane.org; Thu, 17 Dec 2009 22:06:30 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NLTAe-0000Z1-Cq for emacs-devel@gnu.org; Thu, 17 Dec 2009 22:06:24 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NLTAZ-0000NZ-Gh for emacs-devel@gnu.org; Thu, 17 Dec 2009 22:06:23 -0500 Original-Received: from [199.232.76.173] (port=45508 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NLTAZ-0000NR-CT for emacs-devel@gnu.org; Thu, 17 Dec 2009 22:06:19 -0500 Original-Received: from ntp.math.s.chiba-u.ac.jp ([133.82.132.2]:64940 helo=mathmail.math.s.chiba-u.ac.jp) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NLTAY-0007bJ-NH for emacs-devel@gnu.org; Thu, 17 Dec 2009 22:06:19 -0500 Original-Received: from church.math.s.chiba-u.ac.jp (church [133.82.132.36]) by mathmail.math.s.chiba-u.ac.jp (Postfix) with ESMTP id 182E1C0557; Fri, 18 Dec 2009 12:06:14 +0900 (JST) In-Reply-To: <4B2A5F92.9090008@swipnet.se> User-Agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (=?ISO-8859-4?Q?Shij=F2?=) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI) X-detected-operating-system: by monty-python.gnu.org: NetBSD 3.0 (DF) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:118692 Archived-At: >>>>> On Thu, 17 Dec 2009 17:42:58 +0100, Jan Dj.ANdrv said: >>> For example, if a new font is added or if /etc/font.conf is >>> changed, Emacs must be restarted because caches prevents Emacs >>> from noticing the change. >> >> The problem of extremely slow display is the bigger problem than >> it. >> > How much is extremely, do you have figures? I haven't noticed any change, > maybe it only manifests itself for certain locales. I can notice a clear difference on Ubuntu 9.10 with some additions for Japanese support, running on MacBook Air (the bug reporter output is at the end). Steps to reproduce: 1. emacs -Q 2. C-u C-h t j RET 3. Keep pressing C-v Then scrolling looks like "waving". The font used for displaying Japanese characters is xft:-unknown-VL $B%4%7%C%/(B-normal-normal-normal-*-13-*-*-*-*-0-iso10646-1 (The above Japanese word means "Gothic") I think it's not noticeable with the tutorial in English (C-u C-h t a RET in Step 2). And on some other system such as X11 on Mac OS X 10.5, I found the difference minor. YAMAMOTO Mitsuharu mituharu@math.s.chiba-u.ac.jp In GNU Emacs 23.1.90.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3) of 2009-12-18 on mituharu-laptop Windowing system distributor `The X.Org Foundation', version 11.0.10604000 Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: ja_JP.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Load-path shadows: None found. Features: (shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock sha1 hex-util hashcash mail-utils emacsbug japan-util tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd font-setting tool-bar dnd fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces cus-face files text-properties overlay md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs)