From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Spencer Baugh Newsgroups: gmane.emacs.bugs Subject: bug#64735: 29.0.92; find invocations are ~15x slower because of ignores Date: Fri, 21 Jul 2023 16:11:31 -0400 Message-ID: References: <1fd5e3ed-e1c3-5d6e-897f-1d5d55e379fa@gutov.dev> <87wmyupvlw.fsf@localhost> <5c4d9bea-3eb9-b262-138a-4ea0cb203436@gutov.dev> <87tttypp2e.fsf@localhost> <87ilaepkaw.fsf@localhost> <871qh1oy2b.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40872"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Dmitry Gutov , 64735@debbugs.gnu.org To: Ihor Radchenko Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jul 21 22:12:29 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 1qMwUF-000ANJ-Bp for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Jul 2023 22:12:27 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qMwTr-00087n-D3; Fri, 21 Jul 2023 16:12:03 -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 1qMwTq-00087d-71 for bug-gnu-emacs@gnu.org; Fri, 21 Jul 2023 16:12:02 -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 1qMwTp-0004L7-R7 for bug-gnu-emacs@gnu.org; Fri, 21 Jul 2023 16:12:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qMwTp-0004Lu-M6 for bug-gnu-emacs@gnu.org; Fri, 21 Jul 2023 16:12:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Spencer Baugh Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 21 Jul 2023 20:12:01 +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=B64735.168997030016701 (code B ref 64735); Fri, 21 Jul 2023 20:12:01 +0000 Original-Received: (at 64735) by debbugs.gnu.org; 21 Jul 2023 20:11:40 +0000 Original-Received: from localhost ([127.0.0.1]:34970 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qMwTT-0004LI-OW for submit@debbugs.gnu.org; Fri, 21 Jul 2023 16:11:40 -0400 Original-Received: from mxout5.mail.janestreet.com ([64.215.233.18]:51263) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qMwTS-0004L2-0M for 64735@debbugs.gnu.org; Fri, 21 Jul 2023 16:11:39 -0400 In-Reply-To: <871qh1oy2b.fsf@localhost> (Ihor Radchenko's message of "Fri, 21 Jul 2023 19:37:48 +0000") 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:265763 Archived-At: Ihor Radchenko writes: > Spencer Baugh writes: > >>> Does find use multiple CPU cores? >> >> Not on its own, but when it's running as a separate subprocess of Emacs, >> that subprocess can (and will, on modern core-rich hardware) run on a >> different CPU core from Emacs itself. That's a form of parallelism >> which is very achievable for Emacs, and provides a big performance win. > > AFAIU, the way find is called by project.el is synchronous: (1) call > find; (2) wait until it produces all the results; (3) process the > results. In such scenario, there is no gain from subprocess. > > Is any part of Emacs is even using sentinels together with find? rgrep.