From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David De La Harpe Golden Newsgroups: gmane.emacs.devel Subject: Re: Emacs 23.0 is much slower starting than Emacs 22.3 Date: Fri, 24 Oct 2008 16:00:57 +0100 Message-ID: <4901E329.3010002@harpegolden.net> References: <20081022091136.GB924@muc.de> <20081022151444.GE924@muc.de> <48FF58FB.6000302@harpegolden.net> <20081022211202.GA1037@muc.de> <49001F5A.7040402@harpegolden.net> <20081023090908.GB2666@muc.de> <4900ACF9.7060501@harpegolden.net> <4900FF17.2000203@harpegolden.net> <49011336.10307@harpegolden.net> <4901287F.3000203@harpegolden.net> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1224860505 5971 80.91.229.12 (24 Oct 2008 15:01:45 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 24 Oct 2008 15:01:45 +0000 (UTC) Cc: acm@muc.de, lennart.borgman@gmail.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 24 17:02:44 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 1KtOBG-00053P-Pu for ged-emacs-devel@m.gmane.org; Fri, 24 Oct 2008 17:02:27 +0200 Original-Received: from localhost ([127.0.0.1]:37081 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KtOA6-0003OM-2Q for ged-emacs-devel@m.gmane.org; Fri, 24 Oct 2008 11:01:14 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KtOA2-0003O0-5O for emacs-devel@gnu.org; Fri, 24 Oct 2008 11:01:10 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KtO9z-0003MZ-Ly for emacs-devel@gnu.org; Fri, 24 Oct 2008 11:01:08 -0400 Original-Received: from [199.232.76.173] (port=55362 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KtO9z-0003MV-FH for emacs-devel@gnu.org; Fri, 24 Oct 2008 11:01:07 -0400 Original-Received: from harpegolden.net ([65.99.215.13]:44668) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KtO9v-0000KF-Rp; Fri, 24 Oct 2008 11:01:04 -0400 Original-Received: from [87.198.54.44] (87-198-54-44.ptr.magnet.ie [87.198.54.44]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "David De La Harpe Golden", Issuer "David De La Harpe Golden Personal CA rev 3" (verified OK)) by harpegolden.net (Postfix) with ESMTP id 6BFCE8088; Fri, 24 Oct 2008 16:00:59 +0100 (IST) User-Agent: Mozilla-Thunderbird 2.0.0.17 (X11/20081018) In-Reply-To: X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) 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:104947 Archived-At: Eli Zaretskii wrote: >> Date: Fri, 24 Oct 2008 02:44:31 +0100 >> From: David De La Harpe Golden >> CC: acm@muc.de, Eli Zaretskii , monnier@iro.umontreal.ca, >> emacs-devel@gnu.org >> >> David De La Harpe Golden wrote: >> >> >>> +++ Which leaves set-auto-mode... >> Which seems to be mostly the particular mode - So of course, this can >> presumably vary wildly from mode to mode, but let's take c-mode (seeing >> as it's for the c files I was testing with): >> >> set-auto-mode->set-auto-mode-0-> >> c-mode-> (c-init-language-vars-for, >> c-common-init->(c-basic-common-init, >> run some internal hooks, like the "neutralize"), ...) >> >> See existing c-neutralize-syntax-in-CPP initial comment: >> "SPEED _MATTERS_ IN THIS FUNCTION!!!" >> >> Profiling confirms - yes, it does. :-) > > How does this compare with Emacs 22? (gc-cons-threshold @ 1G as it was for the emacs23 test your replied to) As you can see by comparing the two, the "set-auto-mode" path of "normal-mode" is similar overhead on both but "hack-local-variables" is about 27 TIMES slower on emacs23... Function Name Call Count Elapsed Time Average Time ============================ ========== ============ ============ find-file-noselect 180 2.2096209999 0.0122756722 find-file-noselect-1 180 1.4848800000 0.0082493333 after-find-file 180 1.226164 0.0068120222 normal-mode 180 0.9997670000 0.0055542611 set-auto-mode 180 0.9343669999 0.0051909277 set-auto-mode-0 180 0.9077470000 0.0050430388 c-mode 180 0.9068940000 0.0050383000 c-common-init 180 0.6864290000 0.0038134944 c-neutralize-syntax-in-CPP 182 0.5930520000 0.0032585274 run-hooks 1998 0.2834299999 0.0001418568 c-init-language-vars-for 180 0.1180209999 0.0006556722 c-basic-common-init 180 0.0789910000 0.0004388388 c-neutralize-CPP-line 14000 0.0531670000 3.797...e-06 hack-local-variables 181 0.0335519999 0.0001853701 easy-menu-add 180 0.0288129999 0.0001600722 make-local-variable 11046 0.0169949999 1.538...e-06 set-auto-mode-1 363 0.0139350000 3.838...e-05 kill-all-local-variables 361 0.0090380000 2.503...e-05 c-setup-paragraph-variables 361 0.0067259999 1.863...e-05 c-update-modeline 360 0.0059999999 1.666...e-05 c-extend-region-for-CPP 182 0.0048190000 2.647...e-05 c-font-lock-init 180 0.0033029999 1.834...e-05 cc-imenu-init 180 0.0009289999 5.161...e-06 c-initialize-cc-mode 180 0.0004939999 2.744...e-06 c-after-change 2 0.000241 0.0001205 use-local-map 182 0.0001749999 9.615...e-07 set-syntax-table 182 0.0001529999 8.406...e-07 c-before-change 2 0.000103 5.15e-05 c-extend-after-change-region 2 3e-06 1.5e-06