From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261812AbTLHVgr (ORCPT ); Mon, 8 Dec 2003 16:36:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261827AbTLHVgr (ORCPT ); Mon, 8 Dec 2003 16:36:47 -0500 Received: from holomorphy.com ([199.26.172.102]:56541 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S261812AbTLHVgq (ORCPT ); Mon, 8 Dec 2003 16:36:46 -0500 Date: Mon, 8 Dec 2003 13:36:39 -0800 From: William Lee Irwin III To: Per Andreas Buer Cc: linux-kernel@vger.kernel.org Subject: Re: 2.4: mylex and > 2GB RAM Message-ID: <20031208213639.GB19856@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Per Andreas Buer , linux-kernel@vger.kernel.org References: <1070897058.25490.56.camel@netstat.linpro.no> <20031208153641.GJ8039@holomorphy.com> <1070898870.25490.76.camel@netstat.linpro.no> <20031208162214.GW19856@holomorphy.com> <20031208202229.GO8039@holomorphy.com> <1070917304.1260.44.camel@localhost.localdomain> <20031208210201.GP8039@holomorphy.com> <1070918737.1260.62.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1070918737.1260.62.camel@localhost.localdomain> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2003-12-08 at 22:02, William Lee Irwin III wrote: >> Actually, this suggests lowmem starvation due to bounce buffering. On Mon, Dec 08, 2003 at 10:25:37PM +0100, Per Andreas Buer wrote: > The kernel is compiled with CONFIG_HIGHIO=y. Do you know if this is a > DAC960 issue or a chipset issue? It uses blk_init_queue() and so gets default bouncing behavior of bouncing everything not in kernel virtualspace; blk_queue_bounce_limit() would describe the device's actual limits to the system. I don't know what they are offhand, though, so I can't tell you what to try. -- wli