Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751770AbWJVHKI (ORCPT ); Sun, 22 Oct 2006 03:10:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750805AbWJVHKD (ORCPT ); Sun, 22 Oct 2006 03:10:03 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:43150 "EHLO pd3mo3so.prod.shaw.ca") by vger.kernel.org with ESMTP id S1750721AbWJVHKB (ORCPT ); Sun, 22 Oct 2006 03:10:01 -0400 Date: Sun, 22 Oct 2006 01:09:58 -0600 From: Robert Hancock Subject: Re: [PATCH] sata_nv ADMA/NCQ support for nForce4 (updated) II In-reply-to: To: Andi Kleen Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Message-id: <453B1946.3070201@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: <45397D22.4030200@shaw.ca> User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1402 Lines: 33 Andi Kleen wrote: > Andi Kleen writes: > >> I tested it on a NF4-Professional system with 8GB RAM and a single >> SATA disk. It first did nicely in LTP and some other tests, >> but during a bonnie++ run it eventually blocked with all >> IO hanging forever. No output either. I did a full backtrace >> and it just showed the processes waiting for a IO wakeup. > > Hmm, to follow myself up: after a few more minutes the machine recovered > and i could log in again (overall the stall was at least 5+ minutes > though) > > Not sure whom to blame, the IO driver might be actually innocent > and it just be one of the usual known but unfixed IO starvation problems. > > -Andi Hmm.. The system hanging up for 5 minutes and then recovering seems rather odd, as far as I know the timeouts in libata are all quite a bit shorter than that. Was there anything unusual in dmesg? If the IO commands weren't completing at the driver level then I would expect the error handling to kick in in some fashion.. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/ - 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/