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: [PATCH] Re: Bignum performance (was: Shrinking the C core) Date: Sat, 12 Aug 2023 08:30:23 +0000 Message-ID: <87y1ig3bog.fsf@localhost> References: <20230809094655.793FC18A4654@snark.thyrsus.com> <87il9owg0f.fsf@yahoo.com> <83fs4rjq9j.fsf@gnu.org> <87jzu2tvfc.fsf@dataswamp.org> <87y1ih3mc1.fsf@localhost> <87h6p5kcek.fsf@dataswamp.org> <87msyxoj2t.fsf@localhost> <875y5lkb4b.fsf@dataswamp.org> <87bkfdsmde.fsf@localhost> <87v8dlihc5.fsf@dataswamp.org> <87il9l1i59.fsf@localhost> <87pm3tgpts.fsf@dataswamp.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="12863"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Emanuel Berg Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Aug 12 10:30:32 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 1qUk12-0003CD-2F for ged-emacs-devel@m.gmane-mx.org; Sat, 12 Aug 2023 10:30:32 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUk0c-0008PS-6m; Sat, 12 Aug 2023 04:30:06 -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 1qUk0Z-0008Lc-I9 for emacs-devel@gnu.org; Sat, 12 Aug 2023 04:30:03 -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 1qUk0X-0007HC-As for emacs-devel@gnu.org; Sat, 12 Aug 2023 04:30:03 -0400 Original-Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 78552240104 for ; Sat, 12 Aug 2023 10:29:58 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1691828998; bh=lKrjBr0RSIJg+uByK7vdrB4RUZuuuwtUkjyIUtcpOQU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:From; b=QRQnUoymHjT5qPbKnWjY2DgQYWPApsAKyEAYejR0peqRd77lHWb+iRzdjO5YKYoCy l75VB8YBUitcIhJoocdm5gpg2y5SNEIXttu891ny/QRnCs5TgqJT+7bEH+k+MZsKP0 znUSHPy3uHrGzdcXFy6IDrKQJueowYKsTVL7owli1chZG1tMnprdc6kKa7DUSS7Fvo ShoXQ3+6GKF+G15z6pKKfi2yRu/bEC7XpxlvK1J7nZEUpIheF1Crd4jk4fYi/dw2Wy wwKeUYXVvZgkXB3IKFiNlc4Zj2eTPgrY/RLCMuv6ECTZjVCgeekEwyO8hUjCATEMEs 4ruvSoJH24jAw== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4RNDP15NbDz9rxD; Sat, 12 Aug 2023 10:29:57 +0200 (CEST) In-Reply-To: <87pm3tgpts.fsf@dataswamp.org> 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=ham 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:308610 Archived-At: Emanuel Berg writes: > What one should do then is run it for 100 hours for 100 Emacs > users' arbitrary Emacs use, then we would see what everyone > was up to in the C part as well. There are known parts of Emacs C code that could see performance optimization. But we need someone to actually go ahead and provide patches. For example, regexp search can see more optimizations (e.g. see https://debbugs.gnu.org/cgi/bugreport.cgi?bug=63225). As you can imagine, it is rather commonly used in Emacs as an editor. Another example is marker processing - Emacs re-adjusts all the markers in buffer by altering each single marker in O(N_markers). As the number of markers grow, we get a problem. See https://yhetil.org/emacs-devel/jwvsfntduas.fsf-monnier+emacs@gnu.org, for example (note that the new overlay implementation already provides the necessary data structures). etc etc. -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at