From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#25706: 26.0.50; Slow C file fontification Date: Tue, 1 Dec 2020 15:07:02 +0100 Message-ID: <956BCA08-0376-4FAD-B1F7-2087C03F6181@acm.org> References: <55C404DC-1C29-449F-9A49-B20EDFFCFCEA@acm.org> <27B320DF-8102-4CDF-8C6A-7157EEAACF64@acm.org> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.17\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2499"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen , 25706@debbugs.gnu.org To: Alan Mackenzie Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Dec 01 15:08:18 2020 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 1kk6KH-0000V6-8z for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 01 Dec 2020 15:08:17 +0100 Original-Received: from localhost ([::1]:35512 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kk6KF-0002Xe-QN for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 01 Dec 2020 09:08:15 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42238) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kk6K2-0002XQ-U6 for bug-gnu-emacs@gnu.org; Tue, 01 Dec 2020 09:08:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46763) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kk6K2-0003Er-MT; Tue, 01 Dec 2020 09:08:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kk6K2-0003Au-I1; Tue, 01 Dec 2020 09:08:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bug-cc-mode@gnu.org Resent-Date: Tue, 01 Dec 2020 14:08:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 25706 X-GNU-PR-Package: emacs,cc-mode X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 25706-submit@debbugs.gnu.org id=B25706.160683163512139 (code B ref 25706); Tue, 01 Dec 2020 14:08:02 +0000 Original-Received: (at 25706) by debbugs.gnu.org; 1 Dec 2020 14:07:15 +0000 Original-Received: from localhost ([127.0.0.1]:58306 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kk6JH-00039j-FS for submit@debbugs.gnu.org; Tue, 01 Dec 2020 09:07:15 -0500 Original-Received: from mail1461c50.megamailservers.eu ([91.136.14.61]:55912 helo=mail267c50.megamailservers.eu) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kk6JF-00039U-98 for 25706@debbugs.gnu.org; Tue, 01 Dec 2020 09:07:14 -0500 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1606831626; bh=BDSvknSkHrYzr+duGbQ4lQLqwsfqxLnhBVHDtSMp/cE=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From; b=QHlJwwFgUw44FYjzuv25CkKp/y5cr207wPhNUaT4aQ4iAluT55hN0sjKRU9xMLJjS wHtPPuWm92la0UghuwgRejacnyVLOMdvvOXOyr/CcVBU6hzkplaMU0M174wT4OYqdh PLZKYAGvwccUkhzVVkkTQX/yZFbCA9g8IJpFTwCw= Feedback-ID: mattiase@acm.or Original-Received: from stanniol.lan (c-064ae655.032-75-73746f71.bbcust.telenor.se [85.230.74.6]) (authenticated bits=0) by mail267c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 0B1E73i2024815; Tue, 1 Dec 2020 14:07:05 +0000 In-Reply-To: X-Mailer: Apple Mail (2.3445.104.17) X-CTCH-RefID: str=0001.0A782F1B.5FC64E0A.0022, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=UL+j4xXy c=1 sm=1 tr=0 a=Ni+dBsiEfW2GqKMPYZim9A==:117 a=Ni+dBsiEfW2GqKMPYZim9A==:17 a=kj9zAlcOel0A:10 a=M51BFTxLslgA:10 a=9kavUgILrRKSyd1MBdcA:9 a=CjuIK1q_8ugA:10 a=pHzHmUro8NiASowvMSCR:22 a=Ew2E2A-JSTLzCXPT_086:22 X-Origin-Country: SE 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:194739 Archived-At: 1 dec. 2020 kl. 13.57 skrev Alan Mackenzie : > Just something I threw together a few years ago, and use regularly on > xdisp.c to check nothing's gone seriously slow/see how well my latest > optimisation has worked. Thank you, good, I just wanted to know that we are measuring the same = thing! > How much time does this regexp change save on a "normal" file, such as > src/xdisp.c? Not much, but clearly measurable -- about 1.5 % (scrolling benchmark). What can be done for big files that mainly consist of preprocessor = definitions?=20=