From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: Emacs 23.0 is much slower starting than Emacs 22.3 Date: Fri, 24 Oct 2008 19:28:46 +0000 Message-ID: <20081024192846.GA4157@muc.de> References: <49001F5A.7040402@harpegolden.net> <20081023090908.GB2666@muc.de> <4900ACF9.7060501@harpegolden.net> <4900FF17.2000203@harpegolden.net> <49011336.10307@harpegolden.net> <4901287F.3000203@harpegolden.net> <20081024112104.GA3246@muc.de> <4901DC7E.9000202@harpegolden.net> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1224875970 29332 80.91.229.12 (24 Oct 2008 19:19:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 24 Oct 2008 19:19:30 +0000 (UTC) Cc: Eli Zaretskii , Lennart Borgman , monnier@iro.umontreal.ca, emacs-devel@gnu.org To: David De La Harpe Golden Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 24 21:20:31 2008 connect(): Connection refused Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1KtSCx-00059Y-R9 for ged-emacs-devel@m.gmane.org; Fri, 24 Oct 2008 21:20:28 +0200 Original-Received: from localhost ([127.0.0.1]:47789 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KtSBq-0004rG-JJ for ged-emacs-devel@m.gmane.org; Fri, 24 Oct 2008 15:19:18 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KtSBh-0004pb-3D for emacs-devel@gnu.org; Fri, 24 Oct 2008 15:19:09 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KtSBe-0004pA-0Q for emacs-devel@gnu.org; Fri, 24 Oct 2008 15:19:07 -0400 Original-Received: from [199.232.76.173] (port=48481 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KtSBd-0004p7-OX for emacs-devel@gnu.org; Fri, 24 Oct 2008 15:19:05 -0400 Original-Received: from colin.muc.de ([193.149.48.1]:4612 helo=mail.muc.de) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KtSBc-0003IJ-Lf for emacs-devel@gnu.org; Fri, 24 Oct 2008 15:19:05 -0400 Original-Received: (qmail 29790 invoked by uid 3782); 24 Oct 2008 19:18:59 -0000 Original-Received: from acm.muc.de (pD9E52CA9.dip.t-dialin.net [217.229.44.169]) by colin2.muc.de (tmda-ofmipd) with ESMTP; Fri, 24 Oct 2008 21:18:56 +0200 Original-Received: (qmail 4242 invoked by uid 1000); 24 Oct 2008 19:28:46 -0000 Content-Disposition: inline In-Reply-To: <4901DC7E.9000202@harpegolden.net> User-Agent: Mutt/1.5.9i X-Delivery-Agent: TMDA/1.1.5 (Fettercairn) X-Primary-Address: acm@muc.de X-detected-operating-system: by monty-python.gnu.org: FreeBSD 4.6-4.9 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:104960 Archived-At: Hi, David! On Fri, Oct 24, 2008 at 03:32:30PM +0100, David De La Harpe Golden wrote: > Alan Mackenzie wrote: [ .... ] > >c-neutralize-syntax-in-CPP isn't the problem. > Probably not, or at least not the slowdown you're seeing i.e. your > relative emacs22/23 problem. N.B. It wasn't intended as a slight - I > do appreciate C is a relative pain to parse, syntax-highlight and deal > with in general, ..... Thanks! > ...., I'm_ not_ saying c-mode's apparently associated overhead is > necessarily unreasonable, but it may explain why stuff I was generally > doing in emacs day-to-day seemed to load a little bit faster than this > particular test case (if you recall, I was surprised at the result) - I > relatively seldom edit c files! But c-mode as a whole _does_ account > for a significant chunk of the startup time on the 180 .c files I was > testing with: Good! > time emacs -l fftest.el -f kill-emacs > with in .emacs a sneaky > (setq auto-mode-alist (cons (cons "\\.c\\'" 'text-mode) auto-mode-alist)) > emacs c-mode realtime > 22 on 4.951 > 23 on 7.388 > 22 off 2.830 > 23 off 4.089 That's something like I would expect. By the way, did you see my other post in this thread (Subject: expanded a bit), where I did a test creating 10,000,000 conses, and Emacs 23 was appreciably slower than Emacs 22? I suspect the garbage collector. -- Alan Mackenzie (Nuremberg, Germany).