From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756260AbYELPzw (ORCPT ); Mon, 12 May 2008 11:55:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753284AbYELPzo (ORCPT ); Mon, 12 May 2008 11:55:44 -0400 Received: from el-out-1112.google.com ([209.85.162.177]:52633 "EHLO el-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753179AbYELPzn (ORCPT ); Mon, 12 May 2008 11:55:43 -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=OT9waPGJvtWjhjfnCwF6ZFmoRsHpmQEAssnmBSew0xkVzpk6/C6tJuVym4k7byKex0ArcSoaTZP1QQddzSQh5EgwcWb7fnd/92fhi54Jex6Y9kZYR27+biMC3zrd63dHEBsQCtpw21RG2eSGj4H7EwfM7znFAPYGYrNEI7zmym4= Message-ID: <8dacd7b30805120855q406f566ma187142719bf5bd4@mail.gmail.com> Date: Mon, 12 May 2008 17:55:42 +0200 From: "Jan Niklas Hasse" To: "Robert Hancock" Subject: Re: libata - DMA problems ICH7 rev 02 Cc: "Alan Cox" , linux-kernel@vger.kernel.org In-Reply-To: <481BD00E.7050302@shaw.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <481BD00E.7050302@shaw.ca> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 3, 2008 at 4:38 AM, Robert Hancock wrote: > This is expected. IOWait just means the system is blocked waiting for IO > and has nothing else to do. It does not mean that DMA is not working. > > [...] > > Looks like you are using DMA: > > ata1.00: configured for UDMA/100 > ata1.01: configured for UDMA/33 > Hm.. strange. But the problem is that my system slows down nevertheless (sometimes the mouse cursor stops moving for a short time or all my programs don't react). How can i find out what is causing the problem? Here I was creating a DVD with dvdauthor which was copying some big video files. It was nearly impossible to use a web browser, although CPU load seems only to be 12.7%. top - 20:33:08 up 4:58, 2 users, load average: 2.94, 2.81, 2.49 Tasks: 134 total, 2 running, 132 sleeping, 0 stopped, 0 zombie Cpu(s): 5.0%us, 7.7%sy, 0.0%ni, 16.2%id, 70.1%wa, 0.3%hi, 0.8%si, 0.0%st Mem: 1019568k total, 996316k used, 23252k free, 1148k buffers Swap: 2916344k total, 83892k used, 2832452k free, 325284k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2609 root 15 -5 0 0 0 S 6 0.0 6:41.67 kcryptd 6344 root 20 0 543m 129m 10m S 3 13.0 6:33.63 Xorg 27062 jhasse 20 0 23164 6424 1176 D 3 0.6 0:11.98 dvdauthor 6891 jhasse 20 0 208m 18m 8956 S 2 1.9 3:13.41 transmission 27173 jhasse 20 0 263m 24m 12m S 2 2.4 0:00.66 gnome-terminal 195 root 20 0 0 0 0 S 1 0.0 0:00.14 pdflush Another example: When I'm burning a disc and at the end, when my drive finishes the disc (and makes those noises) the computer freezes untill the CD is finished and ejected (about 3 seconds). I hope it's the right place to ask here at the mailing list and thanks for your help so far.