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#18522: 24.4.50; mapcar is very slow Date: Sun, 21 Feb 2016 22:45:34 +0200 Message-ID: <83bn79n66p.fsf@gnu.org> References: <8738bkdjqg.fsf@micropit.roche-blanche.homenet.org> <87mw9fczbo.fsf@micropit.roche-blanche.homenet.org> <87zj8inrnv.fsf@building.gnus.org> <871tltq3j9.fsf@roche-blanche.net> <877fvli0qt.fsf@building.gnus.org> <87bnkb1n9w.fsf@roche-blanche.net> <87wpqh9gm3.fsf@gnus.org> <87io1nnx88.fsf@roche-blanche.net> <87vb5l8en7.fsf@gnus.org> <83wpq1rt5o.fsf@gnu.org> <8737so5neo.fsf@gnus.org> <831t87re7a.fsf@gnu.org> <87bn7b3hnz.fsf@roche-blanche.net> <83lh6fpv4z.fsf@gnu.org> <87h9h2xr9k.fsf@roche-blanche.net> <56C99AD0.2000309@gmx.at> <87wppywbaz.fsf@roche-blanche.net> <87d1rquo4a.fsf@roche-blanche.net> <878u2eun9o.fsf@roche-blanche.net> <834md2niqt.fsf@gnu.org> <87k2lyszy2.fsf@roche-blanche.net> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1456087582 4887 80.91.229.3 (21 Feb 2016 20:46:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 21 Feb 2016 20:46:22 +0000 (UTC) Cc: larsi@gnus.org, 18522@debbugs.gnu.org To: Peter =?UTF-8?Q?M=C3=BCnster?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Feb 21 21:46:11 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 1aXatM-0006U2-T9 for geb-bug-gnu-emacs@m.gmane.org; Sun, 21 Feb 2016 21:46:09 +0100 Original-Received: from localhost ([::1]:44021 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXatM-0005Kv-9v for geb-bug-gnu-emacs@m.gmane.org; Sun, 21 Feb 2016 15:46:08 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37963) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXatH-0005JT-Rb for bug-gnu-emacs@gnu.org; Sun, 21 Feb 2016 15:46:04 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXatG-000508-7E for bug-gnu-emacs@gnu.org; Sun, 21 Feb 2016 15:46:03 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:39457) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXatG-000504-4L for bug-gnu-emacs@gnu.org; Sun, 21 Feb 2016 15:46:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aXatF-0005Fw-JA; Sun, 21 Feb 2016 15:46:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bugs@gnus.org Resent-Date: Sun, 21 Feb 2016 20:46:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18522 X-GNU-PR-Package: emacs,gnus X-GNU-PR-Keywords: Original-Received: via spool by 18522-submit@debbugs.gnu.org id=B18522.145608756120197 (code B ref 18522); Sun, 21 Feb 2016 20:46:01 +0000 Original-Received: (at 18522) by debbugs.gnu.org; 21 Feb 2016 20:46:01 +0000 Original-Received: from localhost ([127.0.0.1]:36584 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aXatE-0005Fh-Pr for submit@debbugs.gnu.org; Sun, 21 Feb 2016 15:46:00 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:46909) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aXatA-0005FT-Ej for 18522@debbugs.gnu.org; Sun, 21 Feb 2016 15:45:59 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXat1-0004ti-0a for 18522@debbugs.gnu.org; Sun, 21 Feb 2016 15:45:51 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:41788) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXat0-0004tY-M3; Sun, 21 Feb 2016 15:45:46 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4360 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aXasz-0005Qs-OS; Sun, 21 Feb 2016 15:45:46 -0500 In-reply-to: <87k2lyszy2.fsf@roche-blanche.net> (message from Peter =?UTF-8?Q?M=C3=BCnster?= on Sun, 21 Feb 2016 19:03:49 +0100) 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:113423 Archived-At: > From: Peter Münster > Cc: rudalics@gmx.at, larsi@gnus.org, 18522@debbugs.gnu.org > Date: Sun, 21 Feb 2016 19:03:49 +0100 > > On Sun, Feb 21 2016, Eli Zaretskii wrote: > > > Does this happen only with this particular symbol, or binding any > > symbol slows down? > > It depends on the symbol: > > case-fold-search: slow > fill-column: slow > just-a-symbol: fast > custom-file: fast > > Can you reproduce it? I see a 5-fold slow-down with case-fold-search, not a 30-fold as you reported. It sounds like the difference is between buffer-local variables and global variables. Setting the former will potentially loop over all the buffers and set the value for every buffer that doesn't have a local value. See data.c around line 1517. How many buffers do you have in the "slow" version? I have 230.