From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Miles Bader Newsgroups: gmane.emacs.devel Subject: Re: Low redisplay performance (23 regression) Date: Fri, 24 Apr 2009 07:45:16 +0900 Message-ID: <87zle756rn.fsf@catnip.gol.com> References: <4870CC42-A08E-4BE9-B566-0F4DA7AB0B74@gmail.com> <873ac3arbf.fsf@cyd.mit.edu> <83r5zmhf2q.fsf@gnu.org> <83mya9hm0i.fsf@gnu.org> <873ac0aeoy.fsf@CPU107.opentrends.net> <0D2D1B0B-A80D-4618-A6D7-34A897A54EE6@gmail.com> <87bpqoejps.fsf@cyd.mit.edu> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1240526752 17107 80.91.229.12 (23 Apr 2009 22:45:52 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 23 Apr 2009 22:45:52 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 24 00:47:12 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 1Lx7hH-0008Q7-Q6 for ged-emacs-devel@m.gmane.org; Fri, 24 Apr 2009 00:47:12 +0200 Original-Received: from localhost ([127.0.0.1]:53155 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Lx7fs-0004Yp-Ep for ged-emacs-devel@m.gmane.org; Thu, 23 Apr 2009 18:45:44 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Lx7fn-0004Xp-Mh for emacs-devel@gnu.org; Thu, 23 Apr 2009 18:45:39 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Lx7fh-0004QQ-Lk for emacs-devel@gnu.org; Thu, 23 Apr 2009 18:45:39 -0400 Original-Received: from [199.232.76.173] (port=52413 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Lx7fh-0004QK-Jb for emacs-devel@gnu.org; Thu, 23 Apr 2009 18:45:33 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:42533 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Lx7fh-0003RP-7u for emacs-devel@gnu.org; Thu, 23 Apr 2009 18:45:33 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1Lx7fd-0003wY-1L for emacs-devel@gnu.org; Thu, 23 Apr 2009 22:45:29 +0000 Original-Received: from 218.231.174.23.eo.eaccess.ne.jp ([218.231.174.23]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 Apr 2009 22:45:29 +0000 Original-Received: from miles by 218.231.174.23.eo.eaccess.ne.jp with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 Apr 2009 22:45:29 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 21 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 218.231.174.23.eo.eaccess.ne.jp System-Type: x86_64-unknown-linux-gnu Cancel-Lock: sha1:MK1IW7PvBv/TCBQ8rOd9JIs9Cvs= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) 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:110440 Archived-At: Willem Rein Oudshoorn writes: > M-x list-charset-chars > mule-unicode-0100-24ff > > scrolling in the resulting buffer is extremely slow. > PgUp PgDn, C-n C-p will eat up 100% and it is very jerky. > > This is both on mswindows and Mac OS X. Have you tried doing it (scrolling through the buffer) _twice_? On debian, paging through the buffer the first time through is pretty slow, presumably because it's rendering tons of new characters on every page, but if I go back and do it again it's very fast (not perceptibly different than pages full of normal text). I assume there must be a fair-amount of caching going on... -Miles -- Saa, shall we dance? (from a dance-class advertisement)