From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#15011: 24.3; Scrolling Performance Date: Sat, 03 Aug 2013 11:14:29 +0300 Message-ID: <83r4ebxkbe.fsf@gnu.org> References: <6BF8AEC9264CBA43A46A84B1CBF5464266F27BD9@US-MBX2.ingrnet.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1375517729 23944 80.91.229.3 (3 Aug 2013 08:15:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 3 Aug 2013 08:15:29 +0000 (UTC) Cc: 15011@debbugs.gnu.org To: Barry OReilly Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Aug 03 10:15:30 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1V5Wzp-0001mN-8k for geb-bug-gnu-emacs@m.gmane.org; Sat, 03 Aug 2013 10:15:29 +0200 Original-Received: from localhost ([::1]:58862 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V5Wzo-0000Ja-OU for geb-bug-gnu-emacs@m.gmane.org; Sat, 03 Aug 2013 04:15:28 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41726) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V5Wze-000076-Kd for bug-gnu-emacs@gnu.org; Sat, 03 Aug 2013 04:15:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V5WzW-0007tQ-UD for bug-gnu-emacs@gnu.org; Sat, 03 Aug 2013 04:15:18 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43278) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V5WzO-0007e1-D9; Sat, 03 Aug 2013 04:15:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1V5WzO-0000tK-18; Sat, 03 Aug 2013 04:15:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bug-cc-mode@gnu.org Resent-Date: Sat, 03 Aug 2013 08:15:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15011 X-GNU-PR-Package: emacs,cc-mode X-GNU-PR-Keywords: Original-Received: via spool by 15011-submit@debbugs.gnu.org id=B15011.13755176773296 (code B ref 15011); Sat, 03 Aug 2013 08:15:01 +0000 Original-Received: (at 15011) by debbugs.gnu.org; 3 Aug 2013 08:14:37 +0000 Original-Received: from localhost ([127.0.0.1]:37594 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V5Wyz-0000r6-A9 for submit@debbugs.gnu.org; Sat, 03 Aug 2013 04:14:37 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:57812) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V5Wyx-0000qW-5F for 15011@debbugs.gnu.org; Sat, 03 Aug 2013 04:14:35 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MQY002003L3NE00@a-mtaout20.012.net.il> for 15011@debbugs.gnu.org; Sat, 03 Aug 2013 11:14:28 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MQY00253483AX80@a-mtaout20.012.net.il>; Sat, 03 Aug 2013 11:14:27 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:76918 Archived-At: > Date: Fri, 2 Aug 2013 18:26:14 -0400 > From: Barry OReilly > > Scrolling is known to be slow in C++ files without some performance > tunes. I use these two customizations myself: > > '(font-lock-maximum-decoration (quote ((c++-mode . 2)))) > '(jit-lock-defer-time 0.01) Please provide some additional data, like the rate of your keyboard auto-repeat (assuming that's when the problem happens), the usual height of your C++ windows, the kind of CPU and clock speed you have, and some quantitative measure of "slow scrolling". A repeatable test case, starting from "emacs -Q", with a file to use would also be good. Without these data, a bug report such as this can never be known to be resolved, because there's no way of telling whether what's fast enough in my use cases is fast enough for yours.