From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#24720: Performance impact of -no-pie Date: Mon, 17 Oct 2016 13:18:51 -0700 Organization: UCLA Computer Science Department Message-ID: <60845a3c-9167-faa1-2875-962e7025cc1f@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1476735678 18319 195.159.176.226 (17 Oct 2016 20:21:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 17 Oct 2016 20:21:18 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 Cc: Alex To: 24720@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Oct 17 22:21:13 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bwEOq-0000uB-Kq for geb-bug-gnu-emacs@m.gmane.org; Mon, 17 Oct 2016 22:20:44 +0200 Original-Received: from localhost ([::1]:35728 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bwEOs-0005S9-CF for geb-bug-gnu-emacs@m.gmane.org; Mon, 17 Oct 2016 16:20:46 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:40520) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bwEOD-0004wD-RT for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:20:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bwEOA-0003QY-Ln for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:20:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:59133) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1bwEOA-0003QN-Ia for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:20:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bwEOA-0004ga-Ci for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:20:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 17 Oct 2016 20:20:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 24720 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: Emacs bug reports Original-Received: via spool by submit@debbugs.gnu.org id=B.147673554717923 (code B ref -1); Mon, 17 Oct 2016 20:20:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 17 Oct 2016 20:19:07 +0000 Original-Received: from localhost ([127.0.0.1]:37090 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bwENH-0004f1-7R for submit@debbugs.gnu.org; Mon, 17 Oct 2016 16:19:07 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:49387) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bwENF-0004eW-H6 for submit@debbugs.gnu.org; Mon, 17 Oct 2016 16:19:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bwEN9-0002oW-IY for submit@debbugs.gnu.org; Mon, 17 Oct 2016 16:19:00 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:57300) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bwEN9-0002oO-FD for submit@debbugs.gnu.org; Mon, 17 Oct 2016 16:18:59 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:40351) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bwEN8-000407-7D for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:18:59 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bwEN5-0002kz-0L for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:18:58 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:41844) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bwEN4-0002jr-QJ for bug-gnu-emacs@gnu.org; Mon, 17 Oct 2016 16:18:54 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2B7DF160E45; Mon, 17 Oct 2016 13:18:53 -0700 (PDT) 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 nuTDAMZDzcBl; Mon, 17 Oct 2016 13:18:51 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 580B8160D69; Mon, 17 Oct 2016 13:18:51 -0700 (PDT) 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 kuoXh8asLc9V; Mon, 17 Oct 2016 13:18:51 -0700 (PDT) Original-Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 413FB16026B; Mon, 17 Oct 2016 13:18:51 -0700 (PDT) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:124603 Archived-At: (The rest of this message is copied from Alex's email archived at .) After being forced to add -no-pie to my CFLAGS in order to build Emacs with a recent GCC, my startup time for my whole config (with -nw) has increased from ~1 second to ~2 seconds. The startup time for `emacs -Q -nw` went up from about 0.07s to 0.14s; again it's about twice as slow. The -Q time doesn't worry me, but the extra second for my main configuration isn't pleasant. Is such a performance impact expected? If so, is there a plan to regain the old speed?