From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.devel Subject: Re: 33% speed up in CC Mode scrolling. Date: Mon, 27 Jun 2016 08:31:42 +0200 Message-ID: <5770C84E.30208@gmx.at> References: <20160615222015.GA4813@acm.fritz.box> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1467009139 1461 80.91.229.3 (27 Jun 2016 06:32:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 27 Jun 2016 06:32:19 +0000 (UTC) To: Alan Mackenzie , Eli Zaretskii , John Wiegley , emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jun 27 08:32:04 2016 Return-path: Envelope-to: ged-emacs-devel@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 1bHQ5U-0004cw-7M for ged-emacs-devel@m.gmane.org; Mon, 27 Jun 2016 08:32:04 +0200 Original-Received: from localhost ([::1]:56711 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHQ5T-0002tz-Gz for ged-emacs-devel@m.gmane.org; Mon, 27 Jun 2016 02:32:03 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44237) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHQ5L-0002sQ-6P for emacs-devel@gnu.org; Mon, 27 Jun 2016 02:31:56 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHQ5H-0000Js-VF for emacs-devel@gnu.org; Mon, 27 Jun 2016 02:31:55 -0400 Original-Received: from mout.gmx.net ([212.227.15.15]:61333) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHQ5H-0000J7-L0; Mon, 27 Jun 2016 02:31:51 -0400 Original-Received: from [192.168.1.100] ([212.95.7.104]) by mail.gmx.com (mrgmx002) with ESMTPSA (Nemesis) id 0MEWPx-1b6jue3UFt-00Fo3F; Mon, 27 Jun 2016 08:31:49 +0200 In-Reply-To: <20160615222015.GA4813@acm.fritz.box> X-Provags-ID: V03:K0:Jb40m2Zgh29l3XRHwJxVO6eXppZhcuoMuXCppBgn03QqZBYUpct znxkXw20A9FwMQvX6bMMncBAxM+qhEM/6miVLmiKX3jezMbIi7/00Q2ccAuuEY/bakpC4Hf gZODH8aG8rASf+aWphscfaERya/2OdrjU5PBhf9E0SSNr68yQEVMh3iWGBMaaSYjR8U5oGJ cLVKXTnw/XyDTtGEkihUA== X-UI-Out-Filterresults: notjunk:1;V01:K0:YtAy8E0XxJU=:/yBYDOEwqnwlAdaXDJ8GTc LnNATnxSXpmN+E/KeeGycMxbJ3QWSwH4my/zNqXnbMbgkLuhyosUh3wcBmZLHFJtPjOwG9cSr HBY39C6ciRCz+nRv4qMVin6Met4NLV3dZuk8epcXKhApwML2qiu664R0TjuFgccvl7lQ3D2ti cb5IeH6GF/8BLuyUdqkgXm9UuEdh7iJRN/6GOh/Yqa0fwWUNoQzRgkrTfsz2Kao+uIN1uKlNx X7P7iewSi5G9avhpigfCGQ24+g7eDzHCXE8/ADf7itgBBr3bmFFEytZQvhtmUIDYt1y8LCHe5 CA8U9v+BOjcBj+wk7jI5MQv21QXKTYpeqLaTWkAwRgPy7prZ61qiGLKa3iJ3uZ73yRMvuBYPx bUDXjgX/O9T62OctUs2PKA5zMFGX3bTiC2MkFOf2p6p8rLfqNvlrJMi31WBUUKkHLv3+EIIMh tBu6TwDKQu64Uhhk3KUGruWHDJSbIOy0sAt2w8yRfe/QmEAHaUcKmTPfOiW60bAD4gK8lDCIl Nl9oSVyMvFX+zlwGAj+eDS+nCkrRt7UN0bU819FHFfQI64V1UW1qtmXUcoB9c3hBIU3o0Gh5Z o9STQXho8QnQXSCK0x44HzHv6V5KIDDDxe0pNW94I28nHbIiny/LdqdX2hmjJKW8LbIcQdpKk gT3oSGOaM11+uVcbOVdV8NFdHouSog0MPfEYfdGqyZ2PWPojcR0/xOgd8ombu1z2q/eCuh8qe YZo7X06vSEWWA7zG6/LY+T81zbDOA4esmx3uYUYP6E8A0WfuTMMjqV0Ju9Vm6Z9NTfJ0WAjT X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.15.15 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:204789 Archived-At: > I've just committed b76385c05076f0adaf7cf89d0ed95dfe5e8570e0 to the > master branch. This takes some code out of CC Mode's font-locking's > hottest loop and puts it back in again in a place where is gets called > less often. > > This speeds up CC Mode's scrolling (as measured on our favourite file, > xdisp.c) by about one third. There may be scope for further optimisation > of this code. > > This is a substantial and worthwhile, although not spectacular, speed up > of CC Mode. This change has hardly any effect here. Scrolling xdisp.c with a '-O0 -g2 -gdwarf-2' build run via emacs -Q is still virtually impossible. martin