From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 27 Feb 2002 06:07:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 27 Feb 2002 06:07:25 -0500 Received: from [62.245.135.174] ([62.245.135.174]:8583 "EHLO mail.teraport.de") by vger.kernel.org with ESMTP id ; Wed, 27 Feb 2002 06:06:47 -0500 Message-ID: <3C7CBDC0.9F9CDBAC@TeraPort.de> Date: Wed, 27 Feb 2002 12:06:40 +0100 From: Martin Knoblauch Reply-To: m.knoblauch@TeraPort.de Organization: TeraPort GmbH X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.4.18-ac1-K3-preempt-lockbr-stats-stuff-lowlat i686) X-Accept-Language: en, de MIME-Version: 1.0 To: Rik van Riel CC: Martin.Bligh@us.ibm.com, "linux-kernel@vger.kernel.org" Subject: Re: 2.4.19-preX: What we really need: -AA patches finally in thetree In-Reply-To: X-MIMETrack: Itemize by SMTP Server on lotus/Teraport/de(Release 5.0.7 |March 21, 2001) at 02/27/2002 12:06:40 PM, Serialize by Router on lotus/Teraport/de(Release 5.0.7 |March 21, 2001) at 02/27/2002 12:06:47 PM, Serialize complete at 02/27/2002 12:06:47 PM Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rik van Riel wrote: > > On Wed, 27 Feb 2002, Martin Knoblauch wrote: > > > > > Not to begin the flamewar, but no thanks. rmap-12f blows -aa away AFAIK > > > > on this P200 w/ 64MB ram. > > > > > > rmap still sucks on large systems though. I'd love to see rmap > > > in the main kernel, but it needs to get the scalability fixed first. > > > The main problem seems to be pagemap_lru_lock ... Rik & crew > > > know about this problem, but let's give them some time to fix it > > > before rmap gets put into mainline .... > > > > just out of curiosity: where does "large systems" start in your > > context? > > My guess it would start at about 4 or 8 CPUs. > > Systems which have a lot of pagetable overhead would also > suffer with -rmap, until -rmap supports pte_highmem. > So, what about a Dual-Athlon system with 2-3 GB of memory? Large system, or just a peanut? :-) Martin -- ------------------------------------------------------------------ Martin Knoblauch | email: Martin.Knoblauch@TeraPort.de TeraPort GmbH | Phone: +49-89-510857-309 C+ITS | Fax: +49-89-510857-111 http://www.teraport.de | Mobile: +49-170-4904759