From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: New GC concept Date: Tue, 08 Jun 2021 05:22:43 +0300 Message-ID: <83k0n5f630.fsf@gnu.org> References: <874ke9h97y.fsf@rfc20.org> <29607b7f-2286-c8c4-a693-cc715a4c26d4@grinta.net> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="15108"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Daniele Nicolodi Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jun 08 04:23:36 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lqROy-0003kh-Gv for ged-emacs-devel@m.gmane-mx.org; Tue, 08 Jun 2021 04:23:36 +0200 Original-Received: from localhost ([::1]:45032 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lqROx-0002SV-Id for ged-emacs-devel@m.gmane-mx.org; Mon, 07 Jun 2021 22:23:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59906) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqROT-0001gk-MU for emacs-devel@gnu.org; Mon, 07 Jun 2021 22:23:05 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:43826) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lqROT-0008T0-By; Mon, 07 Jun 2021 22:23:05 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1633 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqROS-0004A1-O3; Mon, 07 Jun 2021 22:23:05 -0400 In-Reply-To: <29607b7f-2286-c8c4-a693-cc715a4c26d4@grinta.net> (message from Daniele Nicolodi on Mon, 7 Jun 2021 21:51:45 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:270550 Archived-At: > From: Daniele Nicolodi > Date: Mon, 7 Jun 2021 21:51:45 +0200 > > > We can definitely replace the existing GC with the new GC everywhere. > > I've designed the new GC to work on systems without virtual memory > > facilities. On these systems, we'll have to run the GC in > > non-concurrent, non-generational mode, but that's no regression from > > what we have today. We'll also probably want to use a smaller block size > > on these systems to reduce fragmentation overhead. > > Isn't DOS the only system in this class? (It is not a rhetorical > question: a while ago I asked which systems are officially supports and > the answer was that all systems that currently run Emacs are supported). > > Does it make sense to still support DOS? The development environment which is used to build the MS-DOS port of Emacs (DJGPP) does support virtual memory (IIUC what that means in this context).