From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#58687: 29.0.50; Enabling pp-use-max-width dramatically slows down formatting of large sexps like org-persist--index Date: Thu, 12 Jan 2023 18:39:35 +0200 Message-ID: <83zganaerc.fsf@gnu.org> References: <871qr1cn73.fsf@posteo.de> <87v8lc802g.fsf@localhost> <83edrzc1t2.fsf@gnu.org> <87cz7j9146.fsf@localhost> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8166"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 58687@debbugs.gnu.org, m.eliachevitch@posteo.de To: Ihor Radchenko Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jan 12 17:40:36 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pG0cy-0001ik-Ev for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 12 Jan 2023 17:40:32 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pG0cd-0003iw-Hb; Thu, 12 Jan 2023 11:40:11 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pG0cY-0003iK-0I for bug-gnu-emacs@gnu.org; Thu, 12 Jan 2023 11:40:07 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pG0cU-0008PD-HA for bug-gnu-emacs@gnu.org; Thu, 12 Jan 2023 11:40:05 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pG0cT-00015z-Si for bug-gnu-emacs@gnu.org; Thu, 12 Jan 2023 11:40:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 12 Jan 2023 16:40:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 58687 X-GNU-PR-Package: emacs Original-Received: via spool by 58687-submit@debbugs.gnu.org id=B58687.16735415874180 (code B ref 58687); Thu, 12 Jan 2023 16:40:01 +0000 Original-Received: (at 58687) by debbugs.gnu.org; 12 Jan 2023 16:39:47 +0000 Original-Received: from localhost ([127.0.0.1]:48465 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pG0cF-00015M-1D for submit@debbugs.gnu.org; Thu, 12 Jan 2023 11:39:47 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:41208) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pG0cD-000153-0v for 58687@debbugs.gnu.org; Thu, 12 Jan 2023 11:39:45 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pG0c7-0008NN-GD; Thu, 12 Jan 2023 11:39:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=AbO4SLe0hrSVLvk/P2AGQPdWRLFlRLBSloaOZEuT3cs=; b=IAmvEjQEn5Fa iAwx+TKst2XFMsLLgx+Nvd4bcZ8ZXU4YO1J7nY1Y9un9CZHulYTZbVaHhE0j6AkOXiKRM80weXHKv QZf8WVb6ynCGKKBlE8muqIMPjQ/t33AZ3F098akL+SXpyw+AATNJSNrI1hD9nORtIVzpCV2FL7Nwr DeayHPan/7bvivH6uifFs7CqQ/yq1LCSZd54Tb9MGJVK5nd+X6r6LKAPmPNAVrGbcJpZ9b9Q6u2JW OBKZdWqvQd+Lgl65bR3tm7Rv40PfXigBsHpK/nmOB5IlMal8WPBWsBjJ+jUOYquMUAW9EPEVs8Q06 dkKQftr3POihk3x0mS13bw==; Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pG0c6-0008Nq-O7; Thu, 12 Jan 2023 11:39:39 -0500 In-Reply-To: <87cz7j9146.fsf@localhost> (message from Ihor Radchenko on Thu, 12 Jan 2023 16:19:37 +0000) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:253238 Archived-At: > From: Ihor Radchenko > Cc: m.eliachevitch@posteo.de, 58687@debbugs.gnu.org > Date: Thu, 12 Jan 2023 16:19:37 +0000 > > Eli Zaretskii writes: > > > 40041 85% - pp > > 40041 85% - pp-to-string > > 40041 85% - pp-emacs-lisp-code > > 40028 85% - pp--insert-lisp > > 40028 85% - pp--format-list > > 40028 85% - pp--insert > > 38710 82% - pp--insert-lisp > > 38710 82% - pp--format-list > > So, the current `pp' implementation is re-parsing from bob for every > nested list inside sexp. Not "the current 'pp'", but the implementation for this optional behavior. > This is quadratic scaling, and, as the repro demonstrates, the time > goes up very quickly. Is the new option usable at all in practice? Maybe only for small code fragments.