From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?Mattias_Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.devel Subject: Re: Time to merge scratch/correct-warning-pos into master, perhaps? Date: Sun, 16 Jan 2022 17:52:53 +0100 Message-ID: <4592D7BC-289F-4A86-82D8-453FC4C7C086@acm.org> References: <83mtjwzwkb.fsf@gnu.org> <87r198ytog.fsf@gnus.org> <87zgnvyb5y.fsf@gnus.org> <924840B9-C416-42E5-A436-D21F16D058AC@acm.org> Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) 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="14863"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen , emacs-devel@gnu.org, Eli Zaretskii , Stefan Monnier To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Jan 16 17:54:03 2022 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 1n98n4-0003cC-TA for ged-emacs-devel@m.gmane-mx.org; Sun, 16 Jan 2022 17:54:03 +0100 Original-Received: from localhost ([::1]:51980 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n98n4-0002Sk-0b for ged-emacs-devel@m.gmane-mx.org; Sun, 16 Jan 2022 11:54:02 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:55738) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n98m8-00019d-P7 for emacs-devel@gnu.org; Sun, 16 Jan 2022 11:53:04 -0500 Original-Received: from mail1443c50.megamailservers.eu ([91.136.14.43]:41844 helo=mail264c50.megamailservers.eu) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n98m5-0004r5-Fp; Sun, 16 Jan 2022 11:53:04 -0500 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1642351977; bh=oLW2Xz3ge08PL4cgpVBLnIkFW1W4NlwZo/xr/siZ49Q=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From; b=CADGUjgF/LbBVbVI23Q8wciHBPHLT7Ei5J/AAXGlBr4j/Wl0kKmO2qreUiXflYtPm hLvil6guUaoxj579NQ0O6cHvpJtu63e+W2FMZYvQwrzxk7NV3emtPGEIHZpqW8bN2L topX0w/u0/KVuAkYsRTxHx4ylWkna9Tq6OfbXzww= Feedback-ID: mattiase@acm.or Original-Received: from smtpclient.apple (c188-150-171-71.bredband.tele2.se [188.150.171.71]) (authenticated bits=0) by mail264c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 20GGqsuU031991; Sun, 16 Jan 2022 16:52:55 +0000 In-Reply-To: X-Mailer: Apple Mail (2.3654.120.0.1.13) X-CTCH-RefID: str=0001.0A742F25.61E44D69.000B, 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-Origin-Country: SE Received-SPF: softfail client-ip=91.136.14.43; envelope-from=mattiase@acm.org; helo=mail264c50.megamailservers.eu X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no 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" Xref: news.gmane.io gmane.emacs.devel:284836 Archived-At: 16 jan. 2022 kl. 17.18 skrev Alan Mackenzie : > Would you clarify, please. 50% of what? A micro-benchmark for measuring `eq` performance takes 50 % longer to = run on scratch/correct-warning-pos than on master. > So if the Lisp EQ instruction is going to be matching > half the time, there would be an overhead of 50% on just that > instruction. Presumably quite a bit less on a whole program. The point of the micro-benchmark was to measure `eq` since that is what = has become more expensive, and we want to know how much. It uses `memq` = as a way to reducing other factors, but obviously `memq` itself is very = much of interest as well.