From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#36032: 27.0.50; Massive GC when shift-selecting text in HELLO Date: Fri, 31 May 2019 22:47:05 +0300 Message-ID: <83d0jywgna.fsf@gnu.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="194199"; mail-complaints-to="usenet@blaine.gmane.org" To: 36032@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri May 31 21:48:22 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hWnVk-000oIQ-96 for geb-bug-gnu-emacs@m.gmane.org; Fri, 31 May 2019 21:48:20 +0200 Original-Received: from localhost ([127.0.0.1]:48324 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWnVi-0002mT-AS for geb-bug-gnu-emacs@m.gmane.org; Fri, 31 May 2019 15:48:18 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:47016) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWnVT-0002mA-IJ for bug-gnu-emacs@gnu.org; Fri, 31 May 2019 15:48:05 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hWnVS-0002Gj-6j for bug-gnu-emacs@gnu.org; Fri, 31 May 2019 15:48:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:51001) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hWnVS-0002GX-3L for bug-gnu-emacs@gnu.org; Fri, 31 May 2019 15:48:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hWnVS-0001ZG-1Z for bug-gnu-emacs@gnu.org; Fri, 31 May 2019 15:48:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 31 May 2019 19:48:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 36032 X-GNU-PR-Package: emacs X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.15593320435934 (code B ref -1); Fri, 31 May 2019 19:48:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 31 May 2019 19:47:23 +0000 Original-Received: from localhost ([127.0.0.1]:36311 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hWnUp-0001Xe-86 for submit@debbugs.gnu.org; Fri, 31 May 2019 15:47:23 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:60507) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hWnUn-0001XJ-Sr for submit@debbugs.gnu.org; Fri, 31 May 2019 15:47:22 -0400 Original-Received: from lists.gnu.org ([209.51.188.17]:48151) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hWnUi-0001Tw-NW for submit@debbugs.gnu.org; Fri, 31 May 2019 15:47:16 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:46635) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWnUh-0002ij-93 for bug-gnu-emacs@gnu.org; Fri, 31 May 2019 15:47:16 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:51407) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWnUg-0001S8-Q6; Fri, 31 May 2019 15:47:14 -0400 Original-Received: from [176.228.60.248] (port=4822 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hWnUg-0005DD-6i; Fri, 31 May 2019 15:47:14 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x 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: 209.51.188.43 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:159977 Archived-At: To reproduce: emacs -Q C-h h C-SPC C-f C-f C-f .... You will see a ~0.5 sec delay after each C-f, before its effect of extending the region is visible. The reason is GC after every keystroke, and it seems to be caused by the changes in commit 479f51a. That commit caused mode-line-default-help-echo to be called each time Emacs needs to redisplay the mode line, and that seems to produce lots of garbage, at least with the HELLO file. If this function cannot be optimized to produce less garbage, could we perhaps somehow cache the value of the help-echo and not recalculate it unless something really changed? In GNU Emacs 27.0.50 (build 1021, i686-pc-mingw32) of 2019-05-31 built on HOME-C4E4A596F7 Repository revision: 40bc7ddb7529e516e380cc2f2d904feb3faadced Repository branch: master Windowing system distributor 'Microsoft Corp.', version 5.1.2600 System Description: Microsoft Windows XP Service Pack 3 (v5.1.0.2600) Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Configured using: 'configure -C --prefix=/d/usr --with-wide-int --with-modules --enable-checking=yes,glyphs 'CFLAGS=-O0 -gdwarf-4 -g3'' Configured features: XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY W32NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER LCMS2 GMP Important settings: value of $LANG: ENU locale-coding-system: cp1255 Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t global-eldoc-mode: t eldoc-mode: t electric-indent-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 line-number-mode: t transient-mark-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs text-property-search time-date seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils elec-pair mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote threads w32notify w32 lcms2 multi-tty make-network-process emacs) Memory information: ((conses 16 50602 9597) (symbols 48 7062 1) (strings 16 18354 2121) (string-bytes 1 521183) (vectors 16 9578) (vector-slots 8 119896 9488) (floats 8 19 220) (intervals 40 257 97) (buffers 880 11))