From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Bryan Bishop Newsgroups: gmane.emacs.bugs Subject: bug#14051: Fwd: 24.3; Slow scrolling in term modes Date: Sun, 24 Mar 2013 23:42:10 -0500 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1364223494 19934 80.91.229.3 (25 Mar 2013 14:58:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 25 Mar 2013 14:58:14 +0000 (UTC) To: 14051@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Mar 25 15:58:34 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 1UK8r3-0006ck-1r for geb-bug-gnu-emacs@m.gmane.org; Mon, 25 Mar 2013 15:58:33 +0100 Original-Received: from localhost ([::1]:51170 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UK8qf-0002U0-Bh for geb-bug-gnu-emacs@m.gmane.org; Mon, 25 Mar 2013 10:58:09 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:58801) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UK8qT-0002G2-GK for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 10:58:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UK8qM-0007C1-94 for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 10:57:57 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:40741) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UK8qM-0007Bv-4O for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 10:57:50 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1UK8sV-0008R2-FK for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 11:00:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Bryan Bishop Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 25 Mar 2013 15:00:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 14051 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.136422354732301 (code B ref -1); Mon, 25 Mar 2013 15:00:03 +0000 Original-Received: (at submit) by debbugs.gnu.org; 25 Mar 2013 14:59:07 +0000 Original-Received: from localhost ([127.0.0.1]:44845 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1UK8rZ-0008Oq-OP for submit@debbugs.gnu.org; Mon, 25 Mar 2013 10:59:06 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:33596) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1UJzHA-0001Pc-Ff for submit@debbugs.gnu.org; Mon, 25 Mar 2013 00:44:54 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UJzEy-0001Al-8g for submit@debbugs.gnu.org; Mon, 25 Mar 2013 00:42:40 -0400 Original-Received: from lists.gnu.org ([208.118.235.17]:38731) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UJzEy-0001Ah-5B for submit@debbugs.gnu.org; Mon, 25 Mar 2013 00:42:36 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:44930) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UJzEt-0000Fe-T0 for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 00:42:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UJzEo-00019R-UC for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 00:42:31 -0400 Original-Received: from mail-la0-x22d.google.com ([2a00:1450:4010:c03::22d]:40845) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UJzEo-00019H-I3 for bug-gnu-emacs@gnu.org; Mon, 25 Mar 2013 00:42:26 -0400 Original-Received: by mail-la0-f45.google.com with SMTP id er20so10600810lab.18 for ; Sun, 24 Mar 2013 21:42:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:content-type; bh=uuV3MAxKT1/lD9Y0LeKNguzS4PB5kKScGMaTU4GIS+k=; b=ZfozDlXENsJWh7saGKilKMOqxBnMY86SiMMQPX4C8AHHPFYD6RFSBdXolJyQkWE6QA TnwE0ikQTq3JJxSmv0dPQaOOkeL7bzot64eIsiqpzYzkHPFukWRz/5+O7KYP0MLSJFE9 i3g8St+r5w3iDA76SBrDr+dbYmWer1Es1K7Ex/0KmePZ3wmQSCaQeq5uhs7ypLO6lXw8 KBNDUus4b5HxWj8vn1kd3EHFcMan24N3IZ1RMpBDIX39vf5PwC2ZoS7ChFmJtiF2ILyK OiJ2tDeBEOqF4MO258O8HDRW0cqPZV/DWxEPvORkcPlS7zJpLU3+anQMMuEYjhvukuiH nOKw== X-Received: by 10.112.99.5 with SMTP id em5mr5318027lbb.1.1364186545285; Sun, 24 Mar 2013 21:42:25 -0700 (PDT) Original-Received: by 10.114.63.228 with HTTP; Sun, 24 Mar 2013 21:42:10 -0700 (PDT) In-Reply-To: X-Google-Sender-Auth: A58Nj-t-kr-e4AFz88KGO0DqXtw X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). 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Please write in English if possible, as the Emacs maintainers usually do not have translators for other languages. Please describe exactly what actions triggered the bug, and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': The window scrolling performance ("multi-term" and plain old "term" in this case) in emacs 24 is terrible after a few thousand lines of scrollback, slowly getting worse and worse and after about 5000 lines of scrollback takes about a 1/2 second to render the next chunk of text. How I can replicate the problem: emacs -Q M-x term find / (The output of the find command whizzes by, and then starts to get jerky and slow when scrollback history is > 2000 lines) I've installed the stock emacs24 from linux mint/ubuntu packages (24.1.1), and a custom compiled version of 24.3.1 without any special tricks and a compiler option of -O3 and the term mode behavior is all the same, and this behavior even shows up with "emacs -Q". It seems the same with multi-term, ansi-term, nterm, it doesn't matter. This does work very fast in eshell and in terminal-emulator mode. What is weird is ALL the terminal modes in Emacs 23 seem to work great, but not Emacs 24. Any ideas how I can make this mode faster? My suspicion was around font-lock-mode but I've turned that off with no effect. The fact that it is still slow without my init file using -Q and seems to be really fast in Emacs 23 has me stumped. If Emacs crashed, and you have the Emacs process in the gdb debugger, please include the output from the following gdb commands: `bt full' and `xbacktrace'. For information about debugging Emacs, please read the file /usr/local/share/emacs/24.3/etc/DEBUG. In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars) of 2013-03-13 on badwolf Windowing system distributor `The X.Org Foundation', version 11.0.11300000 System Description: Linux Mint 14 Nadia Configured using: `configure '--prefix=/usr/local' 'CFLAGS=-O3'' Important settings: value of $LC_CTYPE: en_US.UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Buffer Menu Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t buffer-read-only: t line-number-mode: t transient-mark-mode: t Recent input: C-x 1 M-x t e r m f i n d C-c C-c C-c C-c C-c C-c e x i t Recent messages: byte-code: Beginning of buffer [14 times] Quit [2 times] Mark set Sending... Already sent message via mail; resend? (y or n) y Mark set [2 times] Sending via mail... Sending...done Mark set Saved text from "The window scrolling performance ("multi" Load-path shadows: None found. Features: (mule-util mailalias mailclient browse-url cus-edit cus-start cus-load wid-edit shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils term disp-table ehelp electric ring help-mode easymenu time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind dynamic-setting system-font-setting font-render-setting x-toolkit x multi-tty emacs)