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#15876: 24.3.50; Highly degraded performance between rev 114715 and 115006 Date: Wed, 20 Nov 2013 05:53:36 +0200 Message-ID: <83d2lvg24f.fsf@gnu.org> References: <867gcdiqji.fsf@somewhere.org> <86fvr09z55.fsf@somewhere.org> <83fvr01du4.fsf@gnu.org> <8638n0nj9p.fsf@somewhere.org> <86y54kvwbh.fsf@somewhere.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1384919652 27913 80.91.229.3 (20 Nov 2013 03:54:12 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 20 Nov 2013 03:54:12 +0000 (UTC) Cc: sva-news@mygooglest.com, 15876@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Nov 20 04:54:16 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 1Viyrn-00038M-Fd for geb-bug-gnu-emacs@m.gmane.org; Wed, 20 Nov 2013 04:54:15 +0100 Original-Received: from localhost ([::1]:52717 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Viyrn-0001QX-0T for geb-bug-gnu-emacs@m.gmane.org; Tue, 19 Nov 2013 22:54:15 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:33182) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Viyrf-0001QH-Dx for bug-gnu-emacs@gnu.org; Tue, 19 Nov 2013 22:54:12 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Viyra-0007cH-96 for bug-gnu-emacs@gnu.org; Tue, 19 Nov 2013 22:54:07 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:48123) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Viyra-0007bx-53 for bug-gnu-emacs@gnu.org; Tue, 19 Nov 2013 22:54:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Viyra-0000JE-0n for bug-gnu-emacs@gnu.org; Tue, 19 Nov 2013 22:54:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 20 Nov 2013 03:54:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15876 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15876-submit@debbugs.gnu.org id=B15876.13849196281169 (code B ref 15876); Wed, 20 Nov 2013 03:54:01 +0000 Original-Received: (at 15876) by debbugs.gnu.org; 20 Nov 2013 03:53:48 +0000 Original-Received: from localhost ([127.0.0.1]:33909 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ViyrM-0000In-46 for submit@debbugs.gnu.org; Tue, 19 Nov 2013 22:53:48 -0500 Original-Received: from mtaout23.012.net.il ([80.179.55.175]:54322) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ViyrI-0000IX-Bm for 15876@debbugs.gnu.org; Tue, 19 Nov 2013 22:53:45 -0500 Original-Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0MWJ00I00MIBLX00@a-mtaout23.012.net.il> for 15876@debbugs.gnu.org; Wed, 20 Nov 2013 05:53:38 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MWJ00IQJMTDL340@a-mtaout23.012.net.il>; Wed, 20 Nov 2013 05:53:38 +0200 (IST) 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:80777 Archived-At: > From: Stefan Monnier > Date: Tue, 19 Nov 2013 20:47:52 -0500 > Cc: 15876@debbugs.gnu.org > > > --8<---------------cut here---------------start------------->8--- > > ;; highlight trailing whitespaces in all modes > > (setq-default show-trailing-whitespace t) > > --8<---------------cut here---------------end--------------->8--- > > Can you try to compare the performance of revision 114849 and > revision 114848? The difference between the two is that the region > highlighting was moved from C to Elisp. This usually shouldn't affect > performance, but maybe there's some interaction with redisplay > that ends up disabling most optimizations? The old region highlighting code was also an optimization killer. Besides, no disabled optimizations should ever have such a terrible effect. It's most probably a bug.