From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.devel Subject: Re: Reliable after-change-functions (via: Using incremental parsing in Emacs) Date: Sat, 4 Apr 2020 21:02:15 +0300 Message-ID: <90cc9e9f-9997-0fa2-e1a8-fd0fb227809f@yandex.ru> References: <83v9mkz5oo.fsf@gnu.org> <83pncsym6l.fsf@gnu.org> <4a9d6bb2-458d-89b0-5389-d1f883ef24a1@yandex.ru> <20200401135237.GA6240@ACM> <20200404110643.GB5329@ACM> <8a5e50ce-1ca6-078b-7e4b-b7849207092d@yandex.ru> <20200404123613.GE5329@ACM> <837dyvv1yq.fsf@gnu.org> <05ef31a9-a75e-4bbc-2c80-70d581baa0e9@yandex.ru> <83y2rbtddx.fsf@gnu.org> <83tv1ztd24.fsf@gnu.org> <0b4cc3ba-3091-7bda-debb-948e8eca075f@yandex.ru> <83lfnbta6h.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="40132"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 Cc: acm@muc.de, casouri@gmail.com, emacs-devel@gnu.org, monnier@iro.umontreal.ca, akrl@sdf.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Apr 04 20:03:02 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 1jKn8H-000AJp-QW for ged-emacs-devel@m.gmane-mx.org; Sat, 04 Apr 2020 20:03:01 +0200 Original-Received: from localhost ([::1]:41156 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jKn8G-0000nu-Tn for ged-emacs-devel@m.gmane-mx.org; Sat, 04 Apr 2020 14:03:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37739) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jKn7d-0000Mw-7G for emacs-devel@gnu.org; Sat, 04 Apr 2020 14:02:22 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jKn7c-00021k-7O for emacs-devel@gnu.org; Sat, 04 Apr 2020 14:02:21 -0400 Original-Received: from mail-wr1-x42a.google.com ([2a00:1450:4864:20::42a]:46055) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jKn7b-0001z9-VF; Sat, 04 Apr 2020 14:02:20 -0400 Original-Received: by mail-wr1-x42a.google.com with SMTP id v5so1521618wrp.12; Sat, 04 Apr 2020 11:02:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=PpsSOoSyVWXn/ZVBBOFNsgx+wrFSh/lL/xQtIAvX/vc=; b=V452UHIrUr2snyAW5ntvlhZFpxD8bVtWIRyB7OmfdwzDZE6tsSdwLJHA1qgryoZ0Kp Jyb6C14dwhM6OYGbryl+Iu7CCzNYXJc6hlMukiIsV7+YWqbUg/uugNAtdu1b7by4lz4O 1PItRwrh9NhFB2tktYMCMPFi+muppbhEEJAc75ObpOUuamCSCKj9aZwne66JAvodIvnF WVubIh53m46kazkEcxwvhwfxZ00do4q4BruqCbKw72U31CpzPfr7dpSCdMNOYBQhpTWH hc74mP5jWnbuKRIN/Nz7d4+ivY1NQ3gfQmo+K7Lwjg48/B8J7uhpKrkFO3ZmpG8GGG70 OLFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=PpsSOoSyVWXn/ZVBBOFNsgx+wrFSh/lL/xQtIAvX/vc=; b=Cpu8PV/ktkdXV5YH9f9nB3/SiFNK5ZEvtPYws6369Ha6Pvr1YkSlMFW5/cZcwW2hkt EkB5D8mbfcrZh8ZDNI6aEpYVtuFv3uo37YjMkon6bVdX9HTQSlY6wOGq2tVqGgqPSFl8 jNg+PW+r7jKnE5Fi9sm9hYJp194CpELZhe3meUigoVp9jIrcX4Fnrmi2SJv++fJlZ9BE owo0O9fA1/lnhs2KjOlvZdgjOF4e2m+eaRBROyZYrBrwQUjl5tq1RpwvE9bacSsyrqFZ jXEOQwk4+FdWHKee/YFzvniQ2RMU3RwLo36E/0NKZI3y/PKsU7G6w2w4V23W3hlXCxFo 3G/A== X-Gm-Message-State: AGi0PuYhYuC9LuIWlH51b3W09NQlg9tMc2T1nGgmVgD3CL/+4QJr7Uiy xgknPfQsT1aaLXB62fqLseOoTsuPbcM= X-Google-Smtp-Source: APiQypJjbERYssvRz5aZlAVasmuogqUwr3AmAjMm5RVbb/kqIKTr7EtViNz8gnDME+WImizGpIQglg== X-Received: by 2002:adf:e94a:: with SMTP id m10mr2553394wrn.324.1586023338021; Sat, 04 Apr 2020 11:02:18 -0700 (PDT) Original-Received: from [192.168.0.2] ([66.205.73.129]) by smtp.googlemail.com with ESMTPSA id a13sm17753097wrt.64.2020.04.04.11.02.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 04 Apr 2020 11:02:17 -0700 (PDT) In-Reply-To: <83lfnbta6h.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::42a 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:246420 Archived-At: On 04.04.2020 20:47, Eli Zaretskii wrote: >> Elapsed time: 0.912808s (0.125516s in 7 GCs) >> Elapsed time: 0.772653s (0.077285s in 4 GCs) >> Elapsed time: 0.769371s (0.076361s in 4 GCs) >> Elapsed time: 0.776261s (0.077395s in 4 GCs) >> [...] >> In an optimized build, it's always < 0.2s here. > So we are looking at -O2 being about 3 to 5 times faster than -Og, > right? That's a speedup that is more than I'd expect, but still > nowhere near an order of magnitude that Alan's timings seemed to show. 0.76 / 0.13 ~= 5.86 Alan's difference is bigger, but not by much: 1.24 / 0.18 ~= 6.88 1.18 (from another email) / 0.18 ~= 6.55 Which probably makes sense given different CPU architectures.