From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#46881: 28.0.50; pdumper dumping causes way too many syscalls Date: Wed, 3 Mar 2021 11:35:31 -0800 Organization: UCLA Computer Science Department Message-ID: References: <83r1kw6b06.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13201"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 Cc: 46881@debbugs.gnu.org To: Pip Cet , Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 03 20:36:12 2021 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 1lHXI2-0003Ap-0p for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Mar 2021 20:36:10 +0100 Original-Received: from localhost ([::1]:45496 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lHXI0-0002Jj-QG for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Mar 2021 14:36:08 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46298) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lHXHu-0002Jb-JC for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 14:36:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:45490) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lHXHu-0005ZD-BC for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 14:36:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lHXHu-0003CS-8g for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 14:36:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 03 Mar 2021 19:36:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 46881 X-GNU-PR-Package: emacs Original-Received: via spool by 46881-submit@debbugs.gnu.org id=B46881.161480014012269 (code B ref 46881); Wed, 03 Mar 2021 19:36:02 +0000 Original-Received: (at 46881) by debbugs.gnu.org; 3 Mar 2021 19:35:40 +0000 Original-Received: from localhost ([127.0.0.1]:57036 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lHXHY-0003Bp-2l for submit@debbugs.gnu.org; Wed, 03 Mar 2021 14:35:40 -0500 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:57290) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lHXHX-0003Bc-00 for 46881@debbugs.gnu.org; Wed, 03 Mar 2021 14:35:39 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id D2E591600F3; Wed, 3 Mar 2021 11:35:32 -0800 (PST) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id UMigWG2Oy0O3; Wed, 3 Mar 2021 11:35:32 -0800 (PST) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2EF4F1600CC; Wed, 3 Mar 2021 11:35:32 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 931QkZ5XMszY; Wed, 3 Mar 2021 11:35:32 -0800 (PST) Original-Received: from [192.168.1.9] (cpe-23-243-218-95.socal.res.rr.com [23.243.218.95]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 048BE1600BC; Wed, 3 Mar 2021 11:35:31 -0800 (PST) In-Reply-To: Content-Language: en-US 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" Xref: news.gmane.io gmane.emacs.bugs:201311 Archived-At: On 3/2/21 11:35 PM, Pip Cet wrote: > IIUC, the prohibition on calling malloc, if it is still a concern, > applies only when loading the dump, not while writing it. That's my understanding as well. > My main concern is the possibility of a partly-written dump file, > since we no longer turn "!UMPEDGNUEMACS" into "DUMPEDGNUEMACS" after > the dump. Maybe it would make sense to restore that feature? Wouldn't hurt, though I'd make it low priority.