From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#64735: 29.0.92; find invocations are ~15x slower because of ignores Date: Sat, 16 Sep 2023 08:37:54 +0300 Message-ID: <83a5tmk79p.fsf@gnu.org> References: <83v8e6lyi4.fsf@gnu.org> <35f8b664-0241-9f96-1aa0-20ca51b2d34c@gutov.dev> <59c30342-a7e0-d83b-a128-0faae4cbd633@gutov.dev> <83pm4bi6qa.fsf@gnu.org> <83bkfs2tw5.fsf@gnu.org> <18a0b4d8-32bd-3ecd-8db4-32608a1ebba7@gutov.dev> <83il8lxjcu.fsf@gnu.org> <2e21ec81-8e4f-4c02-ea15-43bd6da3daa7@gutov.dev> <8334zmtwwi.fsf@gnu.org> <83tts0rkh5.fsf@gnu.org> <831qf3pd1y.fsf@gnu.org> <28a7916e-92d5-77ab-a61e-f85b59ac76b1@gutov.dev> <83sf7jnq0m.fsf@gnu.org> <5c493f86-0af5-256f-41a7-7d886ab4c5e4@gutov.dev> <83ledanvzw.fsf@gnu.org> <83r0n2m7qz.fsf@gnu.org> <26afa109-9ba3-78a3-0e68-7585ae8e3a19@gutov.dev> <83il8dna30.fsf@gnu.org> <83bke5mhvs.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27664"; mail-complaints-to="usenet@ciao.gmane.io" Cc: luangruo@yahoo.com, sbaugh@janestreet.com, yantar92@posteo.net, 64735@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Sep 16 07:39:19 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1qhO1W-00071g-MV for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 16 Sep 2023 07:39:18 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qhO1B-0006s2-8t; Sat, 16 Sep 2023 01:38:57 -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 1qhO19-0006rr-JD for bug-gnu-emacs@gnu.org; Sat, 16 Sep 2023 01:38:55 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qhO19-0006vs-BV for bug-gnu-emacs@gnu.org; Sat, 16 Sep 2023 01:38:55 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qhO1F-0001rb-R3 for bug-gnu-emacs@gnu.org; Sat, 16 Sep 2023 01:39:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 16 Sep 2023 05:39:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 64735 X-GNU-PR-Package: emacs Original-Received: via spool by 64735-submit@debbugs.gnu.org id=B64735.16948427037097 (code B ref 64735); Sat, 16 Sep 2023 05:39:01 +0000 Original-Received: (at 64735) by debbugs.gnu.org; 16 Sep 2023 05:38:23 +0000 Original-Received: from localhost ([127.0.0.1]:45206 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qhO0b-0001qO-Uz for submit@debbugs.gnu.org; Sat, 16 Sep 2023 01:38:23 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46370) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qhO0X-0001qA-M7 for 64735@debbugs.gnu.org; Sat, 16 Sep 2023 01:38:21 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qhO0K-0006ma-13; Sat, 16 Sep 2023 01:38:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=m00oKDk/YHTUd9FKBXDE+VUpWJ7d43XhcNAapNSFK3c=; b=q7KaGP6b7Wcr bn6qV8XHfHSpdtHA8FWnMSHH9JOdtxYuFGXBcEb+HkBxjgv5L6Qm+xv7IMmgyO3i2airax6Yk+2sL ydWiaPOVlCS3U9P0uNZXpic0ZisIThPVjdDVGd+VXwTARckRAl3fkY8/il6aeo7/RJoZjzbB/ZN3T Yfv2gRXcysMMw1VtFvlFf4fkQNHsFVU7FMD6Y/lSZ/lvfM5erBi5jhbjyJorHTmX7kCTWBuFKt+22 LED1q2q8UFZlBcqNHnRUQButkwz3LU+bNO9R1QGnJH7p47WX4IHNBg7XHNG8MkxbEVECucdRAvFOZ YQa2ZCfM7W+xLm6aQtWqUQ==; In-Reply-To: (message from Dmitry Gutov on Sat, 16 Sep 2023 04:32:26 +0300) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:270574 Archived-At: > Date: Sat, 16 Sep 2023 04:32:26 +0300 > Cc: luangruo@yahoo.com, sbaugh@janestreet.com, yantar92@posteo.net, > 64735@debbugs.gnu.org > From: Dmitry Gutov > > >> I wonder what scenario that might become apparent in. Launching many > >> small processes at once? Can't think of a realistic test case. > > > > One process suffices. The effect might not be significant, but > > slowdowns due to new features are generally considered regressions. > > We'd need some objective way to evaluate this. Otherwise we'd just stop > at the prospect of slowing down some process somewhere by 9ns (never > mind speeding others up). That could indeed happen, and did happen in other cases. My personal conclusion from similar situations is that it is impossible to tell in advance what the reaction will be; we need to present the numbers and see how the chips fall.