From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Juanma Barranquero Newsgroups: gmane.emacs.devel Subject: Re: Low redisplay performance (23 regression) Date: Tue, 21 Apr 2009 14:36:28 +0200 Message-ID: References: <4870CC42-A08E-4BE9-B566-0F4DA7AB0B74@gmail.com> <873ac3arbf.fsf@cyd.mit.edu> <83r5zmhf2q.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1240318490 17688 80.91.229.12 (21 Apr 2009 12:54:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 21 Apr 2009 12:54:50 +0000 (UTC) Cc: david.reitter@gmail.com, Chong Yidong , emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Apr 21 14:56:09 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 1LwFVu-0005dW-Ko for ged-emacs-devel@m.gmane.org; Tue, 21 Apr 2009 14:55:50 +0200 Original-Received: from localhost ([127.0.0.1]:33825 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LwFUV-0000Lq-H3 for ged-emacs-devel@m.gmane.org; Tue, 21 Apr 2009 08:54:23 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LwFH1-0001qy-3D for emacs-devel@gnu.org; Tue, 21 Apr 2009 08:40:27 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LwFGv-0001oi-K2 for emacs-devel@gnu.org; Tue, 21 Apr 2009 08:40:25 -0400 Original-Received: from [199.232.76.173] (port=51025 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LwFGv-0001oT-Cs for emacs-devel@gnu.org; Tue, 21 Apr 2009 08:40:21 -0400 Original-Received: from mail-ew0-f160.google.com ([209.85.219.160]:39325) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LwFDa-0001kO-Ox; Tue, 21 Apr 2009 08:36:55 -0400 Original-Received: by ewy4 with SMTP id 4so2259205ewy.42 for ; Tue, 21 Apr 2009 05:36:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:cc:content-type :content-transfer-encoding; bh=kFDojckrLm8sGO9ng2yAf0zJZOU58YJfVgqdW/wcVp4=; b=U/6+vFGWJv1+aaLEGyxnMmeuykrEcjwVjUFv1MMwqMzZaA3rDCOtLemK3Ju3ynqhxG +z0swnFgV1CDN/YVRWttWnBnIvSDxS1Pc5NSRPXlKWsEW9TxC2J8RdxiE6qhmamxtz47 KsRZG6z2z02pgluIA33DuV8pSclpiZMwr+94o= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; b=uJ1ankQAzROiSi5cdNyCwpR3p5jKHTafUL95ThnXP5ekvqFzSUhTLuS+16xP+lMz8/ bKAfwAPrTzPC0bRqmFHKp/1KDDWrRhc24jN1s/rgJpNpbuRMDiepO2zo3pJysDyhS6af c/jSvmTJf4BdnOfDoTVFcY/0xXaYvk721Ydss= Original-Received: by 10.210.13.17 with SMTP id 17mr4926389ebm.43.1240317408119; Tue, 21 Apr 2009 05:36:48 -0700 (PDT) In-Reply-To: <83r5zmhf2q.fsf@gnu.org> X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 2) 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:110388 Archived-At: On Tue, Apr 21, 2009 at 05:15, Eli Zaretskii wrote: > And I see no difference on Windows. I see it. On my setup, doing line-by-line scrolling, Emacs 22.1 is able to scroll a large file (for example, lisp/ChangeLog) keeping up with the keyboard typematic rate without breaking a sweat. Emacs 23 is unable and every now and then resorts to recentering (which I hate). Thanks to hard work by Chong, it now happens only occasionally, instead of once every two or three screenfuls; I just witnessed it five or six times scrolling up to line 2,000 of lisp/ChangeLog. Fortunately, it's not every day that I scroll hundreds of lines line-by-line, so it is bearable. But there's no doubt there is a performance regression with respect to Emacs 22 Juanma