From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: storm@cua.dk (Kim F. Storm) Newsgroups: gmane.emacs.devel Subject: Re: tags in the 3 lowest bits Date: 22 Nov 2003 01:31:13 +0100 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: References: NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1069457676 9371 80.91.224.253 (21 Nov 2003 23:34:36 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 21 Nov 2003 23:34:36 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Sat Nov 22 00:34:33 2003 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1ANKnJ-000530-00 for ; Sat, 22 Nov 2003 00:34:33 +0100 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1ANKnJ-0001i6-00 for ; Sat, 22 Nov 2003 00:34:33 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.24) id 1ANLim-000074-8f for emacs-devel@quimby.gnus.org; Fri, 21 Nov 2003 19:33:56 -0500 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.24) id 1ANLiT-00005R-4R for emacs-devel@gnu.org; Fri, 21 Nov 2003 19:33:37 -0500 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.24) id 1ANLhw-0008Hl-QI for emacs-devel@gnu.org; Fri, 21 Nov 2003 19:33:35 -0500 Original-Received: from [193.162.153.4] (helo=pfepc.post.tele.dk) by monty-python.gnu.org with esmtp (Exim 4.24) id 1ANLhw-0008Hf-Bc for emacs-devel@gnu.org; Fri, 21 Nov 2003 19:33:04 -0500 Original-Received: from kfs-l.imdomain.dk.cua.dk (0x503e2644.bynxx3.adsl-dhcp.tele.dk [80.62.38.68]) by pfepc.post.tele.dk (Postfix) with SMTP id 5AB4B2629F2; Sat, 22 Nov 2003 00:31:33 +0100 (CET) Original-To: Stefan Monnier In-Reply-To: Original-Lines: 28 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.2 Precedence: list List-Id: Emacs development discussions. List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:18023 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:18023 Stefan Monnier writes: > > OTOH, small arrays are already inefficient (because each array, no matter > > how small, is added to the memory-map (a binary tree) used for conservative > > stack marking). So maybe we should begin by changing the handling of small > > arrays (similar to what is done for strings, although I'm not quite sure > > what it would look like). > > Of course, an alternative would be to switch to BoehmGC. Sure, but is it a better alternative? And why? How does that remove the dependency on (non-aligned) mallocs? I can understand your changes in the scope of the current GC scheme(s). Adding another one together with your changes doesn't seem necessary to me. > Dave Love has started work on this and it would be interesting to see > how it works out in practice (what kind of impact it has on memory > footprint and CPU usage). What is the status of that effort? Dave? IMHO, this is not a user-visible change, so I think we have more important things to work on. -- Kim F. Storm http://www.cua.dk