From owner-freebsd-current@FreeBSD.ORG  Thu Sep 16 21:05:28 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 165BF16A4CE
	for <current@freebsd.org>; Thu, 16 Sep 2004 21:05:28 +0000 (GMT)
Received: from av9-2-sn4.m-sp.skanova.net (av9-2-sn4.m-sp.skanova.net
	[81.228.10.107])
	by mx1.FreeBSD.org (Postfix) with ESMTP id B732D43D5E
	for <current@freebsd.org>; Thu, 16 Sep 2004 21:05:27 +0000 (GMT)
	(envelope-from daniel_k_eriksson@telia.com)
Received: by av9-2-sn4.m-sp.skanova.net (Postfix, from userid 502)
	id E90C437E6B; Thu, 16 Sep 2004 23:05:26 +0200 (CEST)
Received: from smtp2-1-sn4.m-sp.skanova.net (smtp2-1-sn4.m-sp.skanova.net
	[81.228.10.183])	by av9-2-sn4.m-sp.skanova.net (Postfix) with ESMTP
	id D65F337E42; Thu, 16 Sep 2004 23:05:26 +0200 (CEST)
Received: from gadget (h130n1fls11o822.telia.com [213.64.66.130])
	by smtp2-1-sn4.m-sp.skanova.net (Postfix) with ESMTP id B4DCE37E53;
	Thu, 16 Sep 2004 23:05:26 +0200 (CEST)
From: "Daniel Eriksson" <daniel_k_eriksson@telia.com>
To: "'Ariff Abdullah'" <skywizard@MyBSD.org.my>,
	<current@freebsd.org>
Date: Thu, 16 Sep 2004 23:05:22 +0200
Organization: Home
Message-ID: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAApNeCp9Vb6EGg0rWg4vStwwEAAAAA@telia.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
In-Reply-To: <20040917043653.419a8e0e.skywizard@MyBSD.org.my>
Thread-Index: AcScLQ7c3rCv7IiPT3iH1K/22La//wAAjkEQ
Subject: RE: ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=207594611
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 16 Sep 2004 21:05:28 -0000

Ariff Abdullah wrote:

> One more thing to consider, the default scheduler. I found that those
> errors occured with SCHED_4BSD (PREEMPTION or NOT), while SCHED_ULE
> (of course without PREEMPTION, or *else*), nothing such that.

I am using SCHED_4BSD without PREEMPTION. Given the recent stability
problems with ULE I haven't even toyed with the idea of trying it since the
machine in question is a production machine.

I'm curious if this problem is in any way related to my other problem: I
cannot use ataraid and gstripe at the same time. If I start gstripe I get an
interrupt storm followed by timeouts that tears down the ataraid arrays.
Next time I feel lucky I'll try gstripe again (Pawel Jakub Dawidek told me
how to get some more debugging output from it). Only reason I haven't done
it yet is because the machine has been very nice and stable for the last two
weeks.


Which reminds me: there was an interrupt storm preceeding the messages I
got. I missed copying that line in my original "me-too" message:

Interrupt storm detected on "irq9: acpi0"; throttling interrupt source
ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=75822564
ad0: WARNING - READ_DMA no interrupt but good status
...

/Daniel Eriksson