From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.devel Subject: Re: Redisplay slower in Emacs 28 than Emacs 27 Date: Mon, 07 Dec 2020 22:15:43 +0100 Message-ID: <87h7ox71xc.fsf@gnus.org> References: <877dptiro7.fsf@gnus.org> <87pn3lhcdd.fsf@gnus.org> <878sa9hbe2.fsf@gnus.org> <877dptfvae.fsf@gnus.org> <83czzl8qwu.fsf@gnu.org> <87sg8h78s8.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5470"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Eli Zaretskii , emacs-devel@gnu.org To: Gregory Heytings Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Dec 07 22:17:50 2020 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 1kmNtF-0001Ix-FV for ged-emacs-devel@m.gmane-mx.org; Mon, 07 Dec 2020 22:17:49 +0100 Original-Received: from localhost ([::1]:55964 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kmNtE-000159-Ga for ged-emacs-devel@m.gmane-mx.org; Mon, 07 Dec 2020 16:17:48 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49318) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kmNrb-0000NH-BU for emacs-devel@gnu.org; Mon, 07 Dec 2020 16:16:07 -0500 Original-Received: from quimby.gnus.org ([2a01:4f9:2b:f0f::2]:60164) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kmNrV-0000bF-6J; Mon, 07 Dec 2020 16:16:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=cV132qzOT5iY50UqwF4zQnj2zHn3EDCGYvBo/rCfqI8=; b=I6tC2qMJjxkunogl3d5aOYYoWM blhwtsVkrfrxS94NPb5MH0KEcziQ2JaRVtdpvwbD1jXx5P4MMp3Nr3B+9qn3CU7JAuBq8GDRyiT2z ziJOPlpoK4GuxtMjRPXoOHsWk6mLp7USB5eRMfRuEcvG+RHK3ubYAz8EH6uiNUI2RxUc=; Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kmNrE-0001t9-UX; Mon, 07 Dec 2020 22:15:57 +0100 X-Now-Playing: Boris's _NO_: "Fundamental Error" In-Reply-To: (Gregory Heytings's message of "Mon, 07 Dec 2020 21:06:09 +0000") Received-SPF: pass client-ip=2a01:4f9:2b:f0f::2; envelope-from=larsi@gnus.org; helo=quimby.gnus.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:260519 Archived-At: Gregory Heytings writes: > With equal_lists 18.7s, with !equal_lists 16.1s. > > This difference is not due to an obscure compiler bug, the timings > above are with GCC 10, but the timings with Clang 9 are similar: with > equal_lists 19.0s, with !equal_lists 16.6s. Very interesting. Using the image cache for small images slows Emacs down? Or is there a bug in equal_lists? Just to make 100% sure -- could you re-run the benchmark with something like the following as the function: static struct image * search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash, unsigned long foreground, unsigned long background, bool ignore_colors) { return NULL; } -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no