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.bugs Subject: bug#46881: 28.0.50; pdumper dumping causes way too many syscalls Date: Wed, 03 Mar 2021 16:09:15 +0100 Message-ID: <87tupsw9yc.fsf@gnus.org> References: <83r1kw6b06.fsf@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="34027"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 46881@debbugs.gnu.org, Paul Eggert To: Pip Cet Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 03 16:10:08 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 1lHT8a-0008ki-5y for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Mar 2021 16:10:08 +0100 Original-Received: from localhost ([::1]:41342 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lHT8Z-0001dJ-7K for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Mar 2021 10:10:07 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47014) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lHT8U-0001dB-Jo for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 10:10:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:45069) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lHT8U-0001NO-BK for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 10:10:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lHT8U-0000TP-79 for bug-gnu-emacs@gnu.org; Wed, 03 Mar 2021 10:10:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 03 Mar 2021 15:10:02 +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=B46881.16147841751780 (code B ref 46881); Wed, 03 Mar 2021 15:10:02 +0000 Original-Received: (at 46881) by debbugs.gnu.org; 3 Mar 2021 15:09:35 +0000 Original-Received: from localhost ([127.0.0.1]:56615 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lHT82-0000Se-LT for submit@debbugs.gnu.org; Wed, 03 Mar 2021 10:09:34 -0500 Original-Received: from quimby.gnus.org ([95.216.78.240]:40160) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lHT80-0000SO-Ci for 46881@debbugs.gnu.org; Wed, 03 Mar 2021 10:09:33 -0500 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=dWcvz+PRXKBKPusURui7a7AcOm+ihfRCKPJ+xgNRmCE=; b=RrAyIQ/t0jwcKEzBRiEWb3w3fr DcyVjjH77m2bN5fSpyjJdovZgCIV8iuQKzr2KpmurclmlhSKjybnUYoU/nqM6klOpSi/yJjLWRf+8 fYTHrv/Q+fuJHVIL353fWN1+BybXxP/hWXsv3OPk2jOuVnWwa8aFKuy1j+jd8aa0xSwQ=; Original-Received: from cm-84.212.220.105.getinternet.no ([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 1lHT7k-0001G5-Jr; Wed, 03 Mar 2021 16:09:19 +0100 X-Now-Playing: Front 242's _Geography_: "He Runs Too Fast For Us" In-Reply-To: (Pip Cet's message of "Wed, 3 Mar 2021 07:35:45 +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" Xref: news.gmane.io gmane.emacs.bugs:201281 Archived-At: Pip Cet writes: > Since debuggability is such a concern, we probably shouldn't leak the > buffer memory. Revised patch attached. (This patch also removes the > lseek() syscalls; while not quite as numerous as the read() ones, > those did clutter up straces here). I've tried the patch on a couple of systems here, and the resulting Emacs works fine (as expected), and the pdumping is significantly faster here, too. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no