From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#56682: Fix the long lines font locking related slowdowns Date: Wed, 03 Aug 2022 17:26:10 -0400 Message-ID: References: <05388e8d8812bfa3695d@heytings.org> <83v8rf5894.fsf@gnu.org> <65cb7c73fd4a999cca00@heytings.org> <8c7321f2f3400a5db9be@heytings.org> <8c7321f2f388e5343475@heytings.org> <6ea376f6-d503-06d8-6d83-50c52b695394@yandex.ru> <8c7321f2f3ac52bfee4b@heytings.org> <8c7321f2f3ec1ef81af9@heytings.org> <74ddc877f18a8db624e9@heytings.org> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4593"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 56682@debbugs.gnu.org, Eli Zaretskii , Dmitry Gutov To: Gregory Heytings Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 03 23:27:19 2022 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 1oJLte-00013v-Jj for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Aug 2022 23:27:18 +0200 Original-Received: from localhost ([::1]:41136 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oJLtd-0001lK-Dk for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Aug 2022 17:27:17 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55078) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJLtO-0001gv-OM for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 17:27:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:60462) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oJLtO-00075V-G1 for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 17:27:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oJLtO-0006O9-53 for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 17:27:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 03 Aug 2022 21:27:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 56682 X-GNU-PR-Package: emacs Original-Received: via spool by 56682-submit@debbugs.gnu.org id=B56682.165956198624516 (code B ref 56682); Wed, 03 Aug 2022 21:27:02 +0000 Original-Received: (at 56682) by debbugs.gnu.org; 3 Aug 2022 21:26:26 +0000 Original-Received: from localhost ([127.0.0.1]:50211 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oJLso-0006NL-DD for submit@debbugs.gnu.org; Wed, 03 Aug 2022 17:26:26 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:62533) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oJLsl-0006N6-4n for 56682@debbugs.gnu.org; Wed, 03 Aug 2022 17:26:24 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 8108E100189; Wed, 3 Aug 2022 17:26:17 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 8311C1000F3; Wed, 3 Aug 2022 17:26:15 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1659561975; bh=iSzMz47y9OuF/DVACZY/3gLniduv6HP8lZxJjJ6+VEA=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=QfWAJciOzFwvrUTeNulbaSm1s1oDACVGaQofftcvX3jhQiVbd2z/KqiAmlUynRANe W17gyeqq0UY/eeoDVqIO3T28qR7ExjU4n6BfZ6TpIPmGkWdhTbIvhUKRMTzMLTSPGL 6teHPX/rsKqzbJmGH3M53PO20Q82MbHGdn4oXoMrcm6jbu31vdc1KO7OAfEGEryF+O 1j5xuqzMO0GVWEmZfZbMxdLBafYcUNP87x3puWq3JPwDo98mkjz76uWm2FPscG5sH7 UKxtYjEIXyiMGFptL+kwQPy8lBJ/LEjLf5VCz24GVIB77N25COT66mA4k1PzT30TvH GLVH2FFea/R/g== Original-Received: from milanesa (unknown [46.44.221.102]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 644F6120476; Wed, 3 Aug 2022 17:26:14 -0400 (EDT) In-Reply-To: <74ddc877f18a8db624e9@heytings.org> (Gregory Heytings's message of "Tue, 02 Aug 2022 21:43:35 +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" Xref: news.gmane.io gmane.emacs.bugs:238652 Archived-At: Gregory Heytings [2022-08-02 21:43:35] wrote: >> Hmmm was that using the GNU ELPA `json-mode` package? > No, it's with emacs -Q. Sorry, I'm not sure how I missed that you said you used `js-mode`. > Yes, that's correct. (But did you test each mode with the same 5 MB buffer? Yup, a 5MB binary file. > If so, that's perhaps not representative of what happens in reality.) Indeed, tho it gives a rough idea of how it can change. > The general idea is that syntax-ppss is currently an order of > magnitude too slow for "too large" buffers. And that it can be almost another order of magnitude worse in some major modes because of `syntax-propertize`. Stefan