From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: emacs takes exhorbitantly long to read long, one-line files. Date: Tue, 21 May 2013 20:21:16 +0300 Message-ID: <83a9nouu43.fsf@gnu.org> References: <87ppwn62yr.fsf@digitalsignallabs.com> <5199E19A.3020503@yandex.ru> <877git6hhv.fsf@digitalsignallabs.com> <519A08B2.7010106@yandex.ru> <87r4h1lo20.fsf@kwarm.red-bean.com> <838v39wsjz.fsf@gnu.org> <20891.10479.288862.913812@a1i15.kph.uni-mainz.de> <519B4A8A.3000903@yandex.ru> <20891.25388.944056.442461@a1i15.kph.uni-mainz.de> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1369156894 16334 80.91.229.3 (21 May 2013 17:21:34 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 21 May 2013 17:21:34 +0000 (UTC) Cc: kfogel@red-bean.com, ulm@gentoo.org, dmantipov@yandex.ru, yates@digitalsignallabs.com, emacs-devel@gnu.org To: Ulrich Mueller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue May 21 19:21:32 2013 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 1UeqFd-0007k3-Ng for ged-emacs-devel@m.gmane.org; Tue, 21 May 2013 19:21:29 +0200 Original-Received: from localhost ([::1]:59783 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeqFd-00069A-AA for ged-emacs-devel@m.gmane.org; Tue, 21 May 2013 13:21:29 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:39188) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeqFZ-00067N-Ve for emacs-devel@gnu.org; Tue, 21 May 2013 13:21:27 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UeqFY-0001X0-Bj for emacs-devel@gnu.org; Tue, 21 May 2013 13:21:25 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:62986) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UeqFY-0001Wv-3p for emacs-devel@gnu.org; Tue, 21 May 2013 13:21:24 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MN500900S63M300@a-mtaout20.012.net.il> for emacs-devel@gnu.org; Tue, 21 May 2013 20:21:23 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MN5009JKS7MM500@a-mtaout20.012.net.il>; Tue, 21 May 2013 20:21:23 +0300 (IDT) In-reply-to: <20891.25388.944056.442461@a1i15.kph.uni-mainz.de> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.166 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:159716 Archived-At: > Date: Tue, 21 May 2013 14:06:04 +0200 > Cc: Ulrich Mueller , Eli Zaretskii , > Karl Fogel , > Randy Yates , emacs-devel@gnu.org > From: Ulrich Mueller > > >> Emacs 23.4: 4 s / 9 s > >> Emacs 24.3: 16 s / 34 s > >> > >> Is this degradation of performance expected? > > > Can you try 24.3 with (setq-default bidi-display-reordering nil)? > > With BIDI disabled, it shouldn't be 4x at least. > > It's 6 s / 11 s then. Not sure the bidi display is involved in 6 vs 4 sec, but you should know that turning off bidi-display-reordering doesn't revert all the differences between the old unidirectional display and the bidirectional one. It was never meant to do that in the first place.