From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263488AbTLHVA0 (ORCPT ); Mon, 8 Dec 2003 16:00:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263496AbTLHVAZ (ORCPT ); Mon, 8 Dec 2003 16:00:25 -0500 Received: from 66.80-203-43.nextgentel.com ([80.203.43.66]:5330 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S263488AbTLHVAU (ORCPT ); Mon, 8 Dec 2003 16:00:20 -0500 Subject: Re: 2.4: mylex and > 2GB RAM From: Per Andreas Buer To: William Lee Irwin III Cc: linux-kernel@vger.kernel.org In-Reply-To: <20031208202229.GO8039@holomorphy.com> 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> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Linpro AS Message-Id: <1070917304.1260.44.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-7) Date: Mon, 08 Dec 2003 22:01:45 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2003-12-08 at 21:22, William Lee Irwin III wrote: > > It could potentially slow it down a lot more than a few percent. > > The main effect you would see is heavy low memory consumption (LowFree: > going down to almost nothing) and very heavy cpu consumption. Right on. LowFree drops and when it reaches almost nothing the system more or less goes freezes. The DAC960 driver is not a SCSI driver so this means that there is something wrong with the PCI-DMA transfers, right? Replacing the DAC960 with another RAID-kontroller will not help because it will use the same PCI-DMA transfers, right? Any hints on how I can mend this? -- Per Andreas Buer