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#23801: 25.0.95; term.el redraws extremely slow with bidi support enabled, and large buffers Date: Mon, 20 Jun 2016 18:05:29 +0300 Message-ID: <83y45z7veu.fsf@gnu.org> References: <57666E36.6030809@orcon.net.nz> <83pord87rp.fsf@gnu.org> <0b5cd701be526f2391bb8fe15bb120c7@mail.orcon.net.nz> <5767FF42.10208@orcon.net.nz> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1466439362 32071 80.91.229.3 (20 Jun 2016 16:16:02 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 20 Jun 2016 16:16:02 +0000 (UTC) Cc: 23801@debbugs.gnu.org To: Phil Sainty Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jun 20 18:15:46 2016 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 1bF1rR-0004kN-Gc for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Jun 2016 18:15:41 +0200 Original-Received: from localhost ([::1]:44750 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bF1rQ-0006Rl-H3 for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Jun 2016 12:15:40 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:38491) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bF0n3-0007qz-C0 for bug-gnu-emacs@gnu.org; Mon, 20 Jun 2016 11:07:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bF0mz-0003c8-U1 for bug-gnu-emacs@gnu.org; Mon, 20 Jun 2016 11:07:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:35516) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bF0mz-0003c4-Py for bug-gnu-emacs@gnu.org; Mon, 20 Jun 2016 11:07:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bF0mz-0000AX-MH for bug-gnu-emacs@gnu.org; Mon, 20 Jun 2016 11:07:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 20 Jun 2016 15:07:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23801 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 23801-submit@debbugs.gnu.org id=B23801.1466435195616 (code B ref 23801); Mon, 20 Jun 2016 15:07:01 +0000 Original-Received: (at 23801) by debbugs.gnu.org; 20 Jun 2016 15:06:35 +0000 Original-Received: from localhost ([127.0.0.1]:47853 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bF0mY-00009r-RJ for submit@debbugs.gnu.org; Mon, 20 Jun 2016 11:06:35 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:47315) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bF0mW-00009e-Ry for 23801@debbugs.gnu.org; Mon, 20 Jun 2016 11:06:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bF0mO-0003T9-GQ for 23801@debbugs.gnu.org; Mon, 20 Jun 2016 11:06:27 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:48018) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bF0mO-0003SU-D6; Mon, 20 Jun 2016 11:06:24 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3449 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bF0mM-0006zE-Al; Mon, 20 Jun 2016 11:06:22 -0400 In-reply-to: <5767FF42.10208@orcon.net.nz> (message from Phil Sainty on Tue, 21 Jun 2016 02:35:46 +1200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:119842 Archived-At: > From: Phil Sainty > Cc: Eli Zaretskii > Date: Tue, 21 Jun 2016 02:35:46 +1200 > > I believe the terminal screen refreshes which exhibit the issue > are performed by inserting spaces (with a background colour). Is background color really necessary? > It turns out that we can demonstrate this issue without any other > programs, simply by inserting spaces (or tabs). > > Most critically, inserting non-whitespace characters does NOT > cause performance issues! (At least not the ones I've tried.) Thanks, this finally begins to make sense. I will look into this when I have time.