From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: indirect threading for bytecode interpreter Date: Mon, 21 Sep 2009 15:21:41 +0200 Organization: Organization?!? Message-ID: <87vdjcv3fe.fsf@lola.goethe.zz> 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 1253539352 6193 80.91.229.12 (21 Sep 2009 13:22:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 21 Sep 2009 13:22:32 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Sep 21 15:22:25 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 1MpiqW-0007cF-Th for ged-emacs-devel@m.gmane.org; Mon, 21 Sep 2009 15:22:25 +0200 Original-Received: from localhost ([127.0.0.1]:46277 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MpiqV-0008A0-UV for ged-emacs-devel@m.gmane.org; Mon, 21 Sep 2009 09:22:24 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MpiqN-00089i-FC for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:22:15 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MpiqH-00088r-Qs for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:22:14 -0400 Original-Received: from [199.232.76.173] (port=53022 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MpiqH-00088Z-Cs for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:22:09 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:33143) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1MpiqG-0000oy-Qh for emacs-devel@gnu.org; Mon, 21 Sep 2009 09:22:09 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.50) id 1MpiqD-0007Ut-G1 for emacs-devel@gnu.org; Mon, 21 Sep 2009 15:22:05 +0200 Original-Received: from p5b2c2878.dip.t-dialin.net ([91.44.40.120]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 21 Sep 2009 15:22:05 +0200 Original-Received: from dak by p5b2c2878.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 21 Sep 2009 15:22:05 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 17 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: p5b2c2878.dip.t-dialin.net X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) Cancel-Lock: sha1:KHJzQj7ZKoHxJF2JFdj9IC5+jcM= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) 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:115493 Archived-At: Stefan Monnier writes: >> 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. The 10% occur in bursts of unresponsiveness. If such a burst is halved in size, the total runtime improvement will not be impressive, but the responsiveness gets quite better. -- David Kastrup