From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935878AbYEBUDP (ORCPT ); Fri, 2 May 2008 16:03:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756810AbYEBUDD (ORCPT ); Fri, 2 May 2008 16:03:03 -0400 Received: from wa-out-1112.google.com ([209.85.146.180]:40418 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752596AbYEBUDA (ORCPT ); Fri, 2 May 2008 16:03:00 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=S99TYTpHt/KUCayYkxAJ+6Slr7umeesrnys8A5ogS6jm2ztrqbSN/Ld+dyfvf7JFMPtqCY8R9U4qTTu33ksjR0xP6utyt+Pm57h32zVA4gPljFTkVn8dpqV0H36KK5tFwGXHcmtv6VCq5uE2H/qslN3n89EtusiPVi6PBVpg1qI= Message-ID: <8dacd7b30805021303r558c238cs6dacaa0710858987@mail.gmail.com> Date: Fri, 2 May 2008 22:03:00 +0200 From: "Jan Niklas Hasse" To: "Alan Cox" Subject: Re: libata - DMA problems ICH7 rev 02 Cc: linux-kernel@vger.kernel.org In-Reply-To: <20080502135833.2248900e@core> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <8dacd7b30805020437k2390d844ldd8909ebe11e9d56@mail.gmail.com> <20080502135833.2248900e@core> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 2, 2008 at 2:58 PM, Alan Cox wrote: > > my BIOS didn't support it), but none of them worked (every time my > > harddisk is loading my CPU is spammed with IOWait). > > Then you must have a different problem ? Maybe, but it seems as DMA isn't used. Everytime my hard disk is reading/writing my system gets very slow. Here's the line when i run top: Cpu(s): 12.6%us, 5.4%sy, 0.0%ni, 6.5%id, 74.2%wa, 0.5%hi, 0.8%si, 0.0%st The thing I mean is "wa". > > Output of uname -a and lspci is attached. > > > > I hope you can help me, very hard to work without DMA. > > Please send the output of "dmesg" after boot Okay, I pasted it here: http://rafb.net/p/KiWhqE72.html