Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 26 Feb 2003 00:29:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 26 Feb 2003 00:29:09 -0500 Received: from holomorphy.com ([66.224.33.161]:39353 "EHLO holomorphy") by vger.kernel.org with ESMTP id ; Wed, 26 Feb 2003 00:29:09 -0500 Date: Tue, 25 Feb 2003 21:38:05 -0800 From: William Lee Irwin III To: Rik van Riel Cc: Andrea Arcangeli , "Martin J. Bligh" , Andrew Morton , Hanna Linder , lse-tech@lists.sf.et, linux-kernel@vger.kernel.org Subject: Re: Minutes from Feb 21 LSE Call Message-ID: <20030226053805.GK10411@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Rik van Riel , Andrea Arcangeli , "Martin J. Bligh" , Andrew Morton , Hanna Linder , lse-tech@lists.sf.et, linux-kernel@vger.kernel.org References: <20030225174359.GA10411@holomorphy.com> <20030225175928.GP29467@dualathlon.random> <20030225185008.GF10396@holomorphy.com> <20030225191817.GT29467@dualathlon.random> <372680000.1046201260@flay> <20030225203001.GV29467@dualathlon.random> <417110000.1046206424@flay> <20030225211718.GY29467@dualathlon.random> <20030225212635.GE10411@holomorphy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.25i Organization: The Domain of Holomorphy Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1277 Lines: 28 On Tue, 25 Feb 2003, William Lee Irwin III wrote: >> My impression thus far is that the anonymous case has not been pressing >> with respect to space consumption or cpu time once the file-backed code >> is in place, though if it resurfaces as a serious concern the anonymous >> rework can be pursued (along with other things). On Wed, Feb 26, 2003 at 02:24:18AM -0300, Rik van Riel wrote: > ... but making the anonymous pages use an object based > scheme probably will make things too expensive. > IIRC the object based reverse map patches by bcrl and > davem both failed on the complexities needed to deal > with anonymous pages. > My instinct is that a hybrid system will work well in > most cases and the worst case with mapped files won't > be too bad. The boxen I'm supposed to babysit need a high degree of resource consciousness wrt. lowmem allocations, so there is a clear voice on this issue. IMHO it's still an open question as to whether this is efficient for replacement concerns, which may yet favor objects. -- wli - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/