From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Chong Yidong Newsgroups: gmane.emacs.bugs Subject: bug#10835: 24.0.93; bidi-paragraph-direction slows down Shell mode Date: Sat, 18 Feb 2012 01:39:23 +0800 Message-ID: <87wr7ljr5g.fsf@gnu.org> References: <87mx8idnji.fsf@gnu.org> <8762f6dn85.fsf@gnu.org> <837gzlwigg.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-Trace: dough.gmane.org 1329500423 15027 80.91.229.3 (17 Feb 2012 17:40:23 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 17 Feb 2012 17:40:23 +0000 (UTC) Cc: 10835@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Feb 17 18:40:22 2012 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RyRn7-0005uP-TC for geb-bug-gnu-emacs@m.gmane.org; Fri, 17 Feb 2012 18:40:18 +0100 Original-Received: from localhost ([::1]:51149 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RyRn7-0005v8-7u for geb-bug-gnu-emacs@m.gmane.org; Fri, 17 Feb 2012 12:40:17 -0500 Original-Received: from eggs.gnu.org ([140.186.70.92]:37457) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RyRn2-0005uY-64 for bug-gnu-emacs@gnu.org; Fri, 17 Feb 2012 12:40:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RyRmy-0004F3-R2 for bug-gnu-emacs@gnu.org; Fri, 17 Feb 2012 12:40:12 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:40263) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RyRmy-0004Ew-O3 for bug-gnu-emacs@gnu.org; Fri, 17 Feb 2012 12:40:08 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1RyRoo-0002N0-Qm for bug-gnu-emacs@gnu.org; Fri, 17 Feb 2012 12:42:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Chong Yidong Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 17 Feb 2012 17:42:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 10835 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 10835-submit@debbugs.gnu.org id=B10835.13295005039078 (code B ref 10835); Fri, 17 Feb 2012 17:42:02 +0000 Original-Received: (at 10835) by debbugs.gnu.org; 17 Feb 2012 17:41:43 +0000 Original-Received: from localhost ([127.0.0.1]:43886 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1RyRoT-0002MB-7T for submit@debbugs.gnu.org; Fri, 17 Feb 2012 12:41:43 -0500 Original-Received: from fencepost.gnu.org ([140.186.70.10]:53240 ident=Debian-exim) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1RyRoO-0002Lr-EI for 10835@debbugs.gnu.org; Fri, 17 Feb 2012 12:41:39 -0500 Original-Received: from bb121-6-68-155.singnet.com.sg ([121.6.68.155]:58714 helo=furball) by fencepost.gnu.org with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1RyRmO-00027V-2O; Fri, 17 Feb 2012 12:39:40 -0500 In-Reply-To: <837gzlwigg.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 17 Feb 2012 18:08:47 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.93 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:56974 Archived-At: --=-=-= Content-Type: text/plain Eli Zaretskii writes: > can you put a printf after this line from xdisp.c: > > else if (it->bidi_it.charpos == bob > || (!string_p > && (FETCH_CHAR (it->bidi_it.bytepos - 1) == '\n' > || FETCH_CHAR (it->bidi_it.bytepos) == '\n'))) > { > /* If we are at the beginning of a line/string, we can produce > the next element right away. */ > bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it, 1); <<<<<< > > and tell me once in how many characters or lines of input from `ls' is > bidi_paragraph_init called here? E.g., to see the character count, > print it->bidi_it.charpos just before that line. Here are the line numbers at which the printf is triggered (and how many times consecutively they get triggered, in parentheses): 1 (x 5) 0 (x 16) 10 (x 2) 1 (x 3) 0 (x 16) 68 (x 4) 37 1606 (x 3) 0 (x 16) 125 (x 4) 94 93 (x 3) 0 (x 16) 183 (x 4) 152 151 (x 3) 0 (x 16) 241 (x 4) 210 (x 4) 0 (x 16) 299 (x 4) 268 267 (x 3) 0 (x 16) 358 (x 4) 327 326 (x 3) 0 (x 16) 417 (x 4) 386 385 (x 3) 0 (x 16) 476 (x 4) 445 444 (x 3) 0 (x 16) 533 (x 4) 502 501 (x 3) 0 (x 16) 590 (x 4) 559 558 (x 3) 0 (x 16) ... and so on. This is over one single ls call. The 0's are when it->bidi_it.charpos == 0, the rest are charpos's converted into buffer line numbers. The pattern seems to be 3 calls at each window end, then 1 on the second line of the window, then 4 on the first window line. After many `ls' calls, when redisplay has become sluggish, the pattern is the same. ... 6788 (x 4) 6757 6756 (x 3) 0 (x 16) 6846 (x 4) 6815 6814 (x 3) 0 (x 16) 6897 (x 4) 6866 6865 (x 3) 0 (x 16) The shell output for one ls call is attached, in case it is useful. --=-=-= Content-Type: text/plain Content-Disposition: inline; filename=shell.txt ~ $ ls /usr/share/doc accountsservice libnm-util2 acl libnotify4 acpid libnspr4 acpi-support libnspr4-0d ada-reference-manual-text libnss3 adduser libnss3-1d adium-theme-ubuntu libnss-mdns alacarte libnuma1 alsa-base libnux-1.0-0 alsa-utils libnux-1.0-common anacron liboauth0 apache2 libofa0 apache2.2-bin libogg0 apache2.2-common liboil0.3 apache2-mpm-worker libopenal1 apache2-utils libopencore-amrnb0 apg libopencore-amrwb0 apparmor libopenexr6 app-install-data libopenmpi1.3 app-install-data-partner libopenmpi-dev apport libopenobex1 apport-hooks-medibuntu liborbit2 apport-symptoms liborc-0.4-0 apt libp11-kit0 aptdaemon libpam0g aptdaemon-data libpam-ck-connector apt-transport-https libpam-gnome-keyring apturl libpam-modules apturl-common libpam-modules-bin apt-utils libpam-runtime aspell libpanel-applet-4-0 aspell-en libpango1.0-0 at libpango1.0-dev autoconf libpangomm-1.4-1 automake libpango-perl autotools-dev libpaper1 avahi-autoipd libpaper-utils avahi-daemon libparted0debian1 avahi-utils libpathplan4 bamfdaemon libpcap0.8 baobab libpci3 base-files libpciaccess0 base-passwd libpcre3 bash libpcrecpp0 bash-completion libpcsclite1 bc libpeas-1.0-0 bind9-host libpeas-common binfmt-support libperl5.12 binutils libpipeline1 blcr-dkms libpixman-1-0 blcr-util libpixman-1-dev blt libplist1 bluez libplymouth2 bluez-alsa libpng12-0 bluez-cups libpng12-dev bluez-gstreamer libpod-plainer-perl brasero libpolkit-agent-1-0 brasero-cdrkit libpolkit-backend-1-0 brasero-common libpolkit-gobject-1-0 bsdmainutils libpoppler13 bsdutils libpoppler-glib6 build-essential libpopt0 busybox-initramfs libpostproc52 busybox-static libprotobuf7 bzip2 libproxy0 bzr libpth20 bzrtools libpthread-stubs0 c2esp libpthread-stubs0-dev cabextract libpulse0 ca-certificates libpulse-mainloop-glib0 ca-certificates-java libpurple0 caribou libpurple-bin clisp libpython2.7 cmap-adobe-japan1 libqhull5 colord libqrupdate1 compiz libqt4-dbus compizconfig-backend-gconf libqt4-declarative compizconfig-settings-manager libqt4-designer compiz-core libqt4-network compiz-gnome libqt4-opengl compiz-plugins libqt4-qt3support compiz-plugins-default libqt4-script compiz-plugins-main libqt4-scripttools compiz-plugins-main-default libqt4-sql consolekit libqt4-sql-mysql console-setup libqt4-svg coreutils libqt4-test cpio libqt4-xml cpp libqt4-xmlpatterns cpp-4.4 libqtbamf1 cpp-4.6 libqtcore4 cron libqtdee2 cups libqtgconf1 cups-bsd libqtgui4 cups-client libquadmath0 cups-common libquvi0 cups-driver-gutenprint libraptor2-0 cups-pk-helper librarian0 cups-ppdc librasqal3 curl libraw1394-11 cvs librdf0 dash libreadline5 dbus libreadline6 dbus-x11 libreadline6-dev dc 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