From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: "Jan Djärv" <jan.h.d@swipnet.se>
Cc: emacs-devel@gnu.org, Kenichi Handa <handa@m17n.org>
Subject: Re: Display performance degradation
Date: Fri, 18 Dec 2009 12:06:14 +0900 [thread overview]
Message-ID: <wlk4wlasm1.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <4B2A5F92.9090008@swipnet.se>
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>>>>> On Thu, 17 Dec 2009 17:42:58 +0100, Jan Dj^[.A^[Ndrv <jan.h.d@swipnet.se> 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:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar>
<help-menu> <send-emacs-bug-report>
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)
next prev parent reply other threads:[~2009-12-18 3:06 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-17 2:49 Display performance degradation YAMAMOTO Mitsuharu
2009-12-17 7:39 ` Jan D.
2009-12-17 20:08 ` Eli Zaretskii
2009-12-18 16:47 ` Jan Djärv
2009-12-18 21:20 ` Eli Zaretskii
2010-01-02 11:05 ` Jan Djärv
2010-01-02 11:21 ` Eli Zaretskii
2010-01-02 14:31 ` Jan Djärv
2009-12-17 12:24 ` Kenichi Handa
2009-12-17 14:43 ` Chong Yidong
2009-12-18 3:53 ` Miles Bader
2009-12-17 16:42 ` Jan Djärv
2009-12-18 3:06 ` YAMAMOTO Mitsuharu [this message]
2009-12-18 5:46 ` Kenichi Handa
2009-12-19 2:56 ` YAMAMOTO Mitsuharu
2009-12-19 10:00 ` Andreas Schwab
2009-12-20 6:27 ` YAMAMOTO Mitsuharu
2009-12-21 1:17 ` Kenichi Handa
2009-12-21 2:11 ` Miles Bader
2009-12-21 2:31 ` Lennart Borgman
2009-12-21 3:05 ` Miles Bader
2009-12-21 3:08 ` Lennart Borgman
2009-12-21 3:44 ` Miles Bader
2009-12-21 3:54 ` Lennart Borgman
2009-12-21 4:16 ` Miles Bader
2009-12-21 4:18 ` Lennart Borgman
2010-01-06 19:46 ` Jan Djärv
2010-01-07 8:26 ` YAMAMOTO Mitsuharu
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