From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.devel Subject: Re: master afc0bfd380: Speed up loaddefs-generate on slow disks Date: Thu, 02 Jun 2022 17:20:43 +0200 Message-ID: <87a6avccs4.fsf@gnus.org> References: <165416120601.23485.9799765950267646757@vcs2.savannah.gnu.org> <20220602091326.514E9C009A8@vcs2.savannah.gnu.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="15629"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: emacs-devel@gnu.org, Paul Eggert To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Jun 02 17:22:53 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 1nwmez-0003rw-3r for ged-emacs-devel@m.gmane-mx.org; Thu, 02 Jun 2022 17:22:53 +0200 Original-Received: from localhost ([::1]:32960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nwmey-0004Jn-4Z for ged-emacs-devel@m.gmane-mx.org; Thu, 02 Jun 2022 11:22:52 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40326) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nwmd5-0001WS-Ri for emacs-devel@gnu.org; Thu, 02 Jun 2022 11:20:55 -0400 Original-Received: from quimby.gnus.org ([2a01:4f9:2b:f0f::2]:42620) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nwmd4-0007ec-7O for emacs-devel@gnu.org; Thu, 02 Jun 2022 11:20:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=jjnxK0dOiInEIMaPew53wXEIcEUOl/WCc/57cMDTeRw=; b=rv54hmGF8JTXR4G7Or261EVdrv agRKBE5pQiZiMO7Jx6ZqxWOBBIF2+cNnMvxnNEjgY/Ouuyv+PkTlYb5SaAHMYUqC4cMkpuGdywm9b +J8nStD1RJ8AgnJDY13i6F4r/iAUds3y7d3+xb0Apv/Rk0tqWM2xAR/Rx53S00mnb+r0=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nwmcw-0001JB-VJ; Thu, 02 Jun 2022 17:20:49 +0200 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAIVBMVEUAAAAWAQQkAgdY AhE2AgpwAhVFAg1lAhMYEAooGQ3////zPJ6kAAAAAWJLR0QKaND0VgAAAAd0SU1FB+YGAg8RE/W7 SucAAACNSURBVDjLY2CgBDAKKmIVFzZ2EhTAIs4SAtKERSIdbBpMSwPCggIwhWkWiwAOCRFcbhXE JSGE03c4JQRwGQgSY8Lmc0ZBBiEnrIYxJWEPQwbGBBzWM2GXYExLD0lxwSahyOIgiN37TA5MOCw3 EsAhkeKIw1UOjCrYdSjgDslRgAZmTiBVoqNhoN1MTwAAOlIMYMcu6tsAAAAldEVYdGRhdGU6Y3Jl YXRlADIwMjItMDYtMDJUMTU6MTc6MTkrMDA6MDDC8FKTAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDIy LTA2LTAyVDE1OjE3OjE5KzAwOjAws63qLwAAAABJRU5ErkJggg== X-Now-Playing: Kate Bush's _This Woman's Work II_: "Them Heavy People" In-Reply-To: (Stefan Monnier's message of "Thu, 02 Jun 2022 11:10:32 -0400") Received-SPF: pass client-ip=2a01:4f9:2b:f0f::2; envelope-from=larsi@gnus.org; helo=quimby.gnus.org 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" Xref: news.gmane.io gmane.emacs.devel:290568 Archived-At: Stefan Monnier writes: > I'm really surprised this is faster, even on slow disks. > Does anyone have a idea of why that is? I didn't actually benchmark it -- either way is fast on my laptop. But the old autoloads code did it with time-less-p, and Eli said that it was faster, so... Perhaps Eli can report back whether it made a difference or not. > Maybe `file-newer-than-file-p` should accept a time value for one of the > two file names so we can speed this up further by refraining from > constructing a whole `file-attributes` only to reduce it down to > a single boolean? There's a longer discussion about these issues (i.e., reworking the functions in this area to be more efficient in these respects) in the bug tracker somewhere. Paul had a bunch of ideas that I think we should pursue. I forget which bug# -- perhaps Paul remembers; added to the CCs. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no