Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 18 Nov 2001 01:28:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 18 Nov 2001 01:27:58 -0500 Received: from penguin.e-mind.com ([195.223.140.120]:24187 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Sun, 18 Nov 2001 01:27:49 -0500 Date: Sun, 18 Nov 2001 07:27:44 +0100 From: Andrea Arcangeli To: Mike Galbraith Cc: Arjan van de Ven , linux-kernel@vger.kernel.org Subject: Re: 2.4.>=13 VM/kswapd/shmem/Oracle issue (was Re: Google's mm problems) Message-ID: <20011118072743.B25232@athlon.random> In-Reply-To: <20011117165441.S1381@athlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.12i In-Reply-To: ; from mikeg@wen-online.de on Sun, Nov 18, 2001 at 07:17:02AM +0100 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 18, 2001 at 07:17:02AM +0100, Mike Galbraith wrote: > On Sat, 17 Nov 2001, Andrea Arcangeli wrote: > > > If all your hardware is PCI nobody will make an allocation from the > > ZONE_DMA classzone and so kswapd will never loop on the ZONE_DMA, as > > instead can happen with -ac as soon as the ZONE_DMA becomes unfreeable > > and under the low watermark (and "unfreeable" of course also means all > > anon not locked memory but no swap installed in the machine). > > We don't fallback to ZONE_DMA anymore? (good) we still fallback on the ZONE_DMA, otherwise mem=17m wouldn't boot :) what we don't do is to try to balance the dma zone if nobody is asking memory explicitly from the dma zone [isa users]. Andrea - 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/