From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ihor Radchenko Newsgroups: gmane.emacs.devel Subject: Re: Debouncing slow mode line constructs (was: Emacs design and architecture. How about copy-on-write?) Date: Fri, 22 Sep 2023 10:07:38 +0000 Message-ID: <87msxey105.fsf@localhost> References: <838r92cgxp.fsf@gnu.org> <837comcam8.fsf@gnu.org> <6946e6f0-c6ef-186c-35d4-c09935c05a07@gutov.dev> <83y1h1axtq.fsf@gnu.org> <87sf79rq5o.fsf@yahoo.com> <83fs38c2yv.fsf@gnu.org> <83o7hw9ee1.fsf@gnu.org> <87il84q845.fsf@yahoo.com> <83il849bx6.fsf@gnu.org> <87a5tfri8c.fsf@yahoo.com> <878r8z27cs.fsf@localhost> <44e98df7-f683-ac07-e644-40757f1d26f9@gutov.dev> <87msxfzts6.fsf@localhost> <7b0c07f5-88c8-4f2c-6ac6-a6112c884f32@gutov.dev> <87il83zsg1.fsf@localhost> <87fs37zrjx.fsf@localhost> <400f8781-6bd9-53a0-0ace-26c327890fd9@gutov.dev> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24539"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Po Lu , Eli Zaretskii , acm@muc.de, incal@dataswamp.org, emacs-devel@gnu.org To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Sep 22 12:06:48 2023 Return-path: Envelope-to: ged-emacs-devel@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 1qjd3g-0006AG-Di for ged-emacs-devel@m.gmane-mx.org; Fri, 22 Sep 2023 12:06:48 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qjd3Q-0005Xw-Sd; Fri, 22 Sep 2023 06:06:32 -0400 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 1qjd3O-0005UQ-B9 for emacs-devel@gnu.org; Fri, 22 Sep 2023 06:06:30 -0400 Original-Received: from mout02.posteo.de ([185.67.36.66]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qjd3L-0002l7-Ci for emacs-devel@gnu.org; Fri, 22 Sep 2023 06:06:29 -0400 Original-Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id BE64C240103 for ; Fri, 22 Sep 2023 12:06:24 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1695377184; bh=ukk2TR1J/ytcQfIm8N+P24q2cB+GMCxqJ3PI0L5vtyg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:From; b=U0/0/vCj7CVPdXI9Q9GQomxO3LUaPRKi4dK//mfqJgbNELz9YcSUplEBmkR13W5yN l1lVBkvCehHJ4z1hZe7jxGpXp/EzDnIOALEPPYwR3DmjEXqOfhgUNcpjWRsNIp4ANs WCnqaCBDmAMgxAFGAVgSnLS/CYZRdop5+HDCigNxzmKi+lPj3UGk00fnfTYXndMUTD 3kcWD68QZ2XhydF3dIykDU8BTTHrDphh+Qo/NhEAgx9rrMpVHh55t8XihNH6c+RD9H cdAXrDViUaN3YXY+OcPBN16UoTNOAh1y+qmwLvPDNiNyURWLh5AI7/huSrgK7CoLKA /su5FeIqtCPhw== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4RsSbM4N7Hz9rxM; Fri, 22 Sep 2023 12:06:23 +0200 (CEST) In-Reply-To: <400f8781-6bd9-53a0-0ace-26c327890fd9@gutov.dev> Received-SPF: pass client-ip=185.67.36.66; envelope-from=yantar92@posteo.net; helo=mout02.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:310945 Archived-At: Dmitry Gutov writes: > On 21/09/2023 14:36, Ihor Radchenko wrote: >> What about automatically debouncing slow :eval constructs in the mode >> line? If we make sure that :eval constructs running longer than a >> threshold do not run too frequently, it can certainly improve user >> experience. > > Sounds worth looking into. > > Though if we just do this silently, it can hide performance problems, > both discouraging the mode-line authors from fixing them, and creating > odd behaviors (from the user's POV) when something which should change, > doesn't. A warning may be displayed when this "debouncing" is activated. This will notify the users yet not degrading performance. > BTW, most advanced mode-lines (including smart-mode-line, which I use, > and is reasonably fast) use the :eval constructs pretty much everywhere. Yup. And users often have no idea how much performance may be affected by these "fancy" mode-lines. Leading to absence of bug reports in some edge cases and general complaints that "Emacs is slow". -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at