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#57207: 29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling) Date: Mon, 22 Aug 2022 15:32:46 +0300 Message-ID: <8335dobgr5.fsf@gnu.org> References: <87bksmx1j1.fsf@localhost> <8335dxiu6m.fsf@gnu.org> <87y1vnjgmn.fsf@gnus.org> <83y1vncbq5.fsf@gnu.org> <87r11fgi7h.fsf@gnus.org> <83sflvc85y.fsf@gnu.org> <87h729902w.fsf@gnus.org> <83edxdbs96.fsf@gnu.org> <87wnb5wthm.fsf@gnus.org> <83pmgxfyc7.fsf@gnu.org> <87fshtwsys.fsf@gnus.org> <877d35wsdd.fsf@gnus.org> <83ilmpfwrf.fsf@gnu.org> <8735dtwrar.fsf@gnus.org> <83h729ft60.fsf@gnu.org> <87tu68v3uu.fsf@gnus.org> <83tu68e83u.fsf@gnu.org> <87fshsteqc.fsf@gnus.org> <87bksgte5e.fsf@gnus.org> <877d34tdwf.fsf@gnus.org> <83pmgwdxhh.fsf@gnu.org> <8735dstdhn.fsf@gnus.org> <37dd2827f52038e95791@heytings.org> <83wnb2ddxd.fsf@gnu.org> <37dd2827f57a3d664931@heytings.org> <37dd2827f52c6a150684@heytings.org> <83tu66cfnr.fsf@gnu.org> <83fshpdctx.fsf@gnu.org> <83bksddag4.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20111"; mail-complaints-to="usenet@ciao.gmane.io" Cc: larsi@gnus.org, 57207@debbugs.gnu.org, yantar92@gmail.com To: Gregory Heytings Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Aug 22 14:33:44 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 1oQ6ci-00056J-7O for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 22 Aug 2022 14:33:44 +0200 Original-Received: from localhost ([::1]:56616 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oQ6ch-0005We-3J for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 22 Aug 2022 08:33:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57314) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oQ6c2-0005U3-VW for bug-gnu-emacs@gnu.org; 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Original-Received: from [87.69.77.57] (port=2408 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 1oQ6bj-0003dR-4b; Mon, 22 Aug 2022 08:32:43 -0400 In-Reply-To: (message from Gregory Heytings on Sun, 21 Aug 2022 19:38:11 +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:240417 Archived-At: > Date: Sun, 21 Aug 2022 19:38:11 +0000 > From: Gregory Heytings > cc: larsi@gnus.org, 57207@debbugs.gnu.org, yantar92@gmail.com > > > >> It is better to do that higher, because not only those places in > >> decode_mode_spec may wish to access BEGV and ZV. Even in the mode-line > >> display there are :eval and :when. > > > > Okay, I'll see what I can do. > > > > Now done in the feature branch, together with a few other improvements. Thanks. However, resetting the narrowing in _all_ buffers at the beginning of each redisplay cycle could be quite expensive in sessions with many hundreds of live buffers. E.g., my production sessions routinely have 300+ buffers, and I'm sure there are larger sessions out there. (We could perhaps make that less expensive by avoiding the potentially costly calls to buf_charpos_to_bytepos, but still.) How much time does the loop in reset_outermost_narrowings take per live buffer? Should we perhaps maintain a list of buffers with such narrowing? It should be a very short list.