Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263568AbUD2GYs (ORCPT ); Thu, 29 Apr 2004 02:24:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263589AbUD2GYs (ORCPT ); Thu, 29 Apr 2004 02:24:48 -0400 Received: from fw.osdl.org ([65.172.181.6]:26575 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S263568AbUD2GYp (ORCPT ); Thu, 29 Apr 2004 02:24:45 -0400 Date: Wed, 28 Apr 2004 23:22:22 -0700 From: Andrew Morton To: Benjamin Herrenschmidt Cc: paulus@samba.org, brettspamacct@fastclick.com, jgarzik@pobox.com, linux-kernel@vger.kernel.org Subject: Re: ~500 megs cached yet 2.6.5 goes into swap hell Message-Id: <20040428232222.1be25448.akpm@osdl.org> In-Reply-To: <1083219158.20089.128.camel@gaston> References: <409021D3.4060305@fastclick.com> <20040428170106.122fd94e.akpm@osdl.org> <409047E6.5000505@pobox.com> <40905127.3000001@fastclick.com> <20040428180038.73a38683.akpm@osdl.org> <16528.23219.17557.608276@cargo.ozlabs.ibm.com> <20040428185342.0f61ed48.akpm@osdl.org> <20040428194039.4b1f5d40.akpm@osdl.org> <16528.28485.996662.598051@cargo.ozlabs.ibm.com> <1083219158.20089.128.camel@gaston> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 779 Lines: 17 Benjamin Herrenschmidt wrote: > > > > The really strange thing is that the behaviour seems to get worse the > > more RAM you have. I haven't noticed any problem at all on my laptop > > with 768MB, only on the G5, which has 2.5GB. (The laptop is still on > > 2.6.2-rc3 though, so I will try a newer kernel on it.) > > Your G5 also has a 2Gb IO hole in the middle of zone DMA, it's possible > that the accounting doesn't work properly. heh. It should have zone->spanned_pages - zone->present_pages = 2G. - 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/