From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: indirect threading for bytecode interpreter Date: Mon, 21 Sep 2009 09:13:10 -0400 Message-ID: References: <200909181915.n8IJFfw7006915@godzilla.ics.uci.edu> <200909210158.n8L1wr55000349@godzilla.ics.uci.edu> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1253538893 4596 80.91.229.12 (21 Sep 2009 13:14:53 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 21 Sep 2009 13:14:53 +0000 (UTC) Cc: Dan Nicolaescu , Emacs development discussions To: Tom Tromey Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Sep 21 15:14:46 2009 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 1Mpij7-00057R-Tj for ged-emacs-devel@m.gmane.org; Mon, 21 Sep 2009 15:14:46 +0200 Original-Received: from localhost ([127.0.0.1]:32869 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mpij6-0006Bk-W1 for ged-emacs-devel@m.gmane.org; Mon, 21 Sep 2009 09:14:45 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Mpihi-0005yY-Cz for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:13:18 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Mpihc-0005wJ-3k for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:13:16 -0400 Original-Received: from [199.232.76.173] (port=34624 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mpihb-0005w1-Du for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:13:11 -0400 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.183]:29083 helo=ironport2-out.pppoe.ca) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1Mpihb-0007jv-6F for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:13:11 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgUFAPwYt0pFxKcP/2dsb2JhbACBU89DhBsFh34 X-IronPort-AV: E=Sophos;i="4.44,424,1249272000"; d="scan'208";a="46192106" Original-Received: from 69-196-167-15.dsl.teksavvy.com (HELO pastel.home) ([69.196.167.15]) by ironport2-out.pppoe.ca with ESMTP; 21 Sep 2009 09:13:10 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id 0EADB8079; Mon, 21 Sep 2009 09:13:10 -0400 (EDT) In-Reply-To: (Tom Tromey's message of "Sun, 20 Sep 2009 21:17:10 -0600") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) X-detected-operating-system: by monty-python.gnu.org: Genre and OS details not recognized. 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:115491 Archived-At: > I've profiled (using oprofile) Emacs running this a few times; typical > results show mark_object at 10-12% of runtime. It is probably pretty > easy to reproduce this with a variety of elisp programs. So no matter how hard we try, we won't gain more than about 10% speed-up trying to optimize the GC. Doesn't sound like a great motivator. Stefan