From owner-freebsd-current@FreeBSD.ORG Thu Sep 16 21:16:50 2004 Return-Path: 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 C95D816A4CE for ; Thu, 16 Sep 2004 21:16:50 +0000 (GMT) Received: from mail.vicor-nb.com (bigwoop.vicor-nb.com [208.206.78.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id B3E3D43D48 for ; Thu, 16 Sep 2004 21:16:50 +0000 (GMT) (envelope-from julian@elischer.org) Received: from elischer.org (julian.vicor-nb.com [208.206.78.97]) by mail.vicor-nb.com (Postfix) with ESMTP id 8A8B17A3D2; Thu, 16 Sep 2004 14:16:50 -0700 (PDT) Message-ID: <414A02C2.4010009@elischer.org> Date: Thu, 16 Sep 2004 14:16:50 -0700 From: Julian Elischer User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.3.1) Gecko/20030516 X-Accept-Language: en, hu MIME-Version: 1.0 To: Daniel Eriksson References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: current@freebsd.org cc: 'Ariff Abdullah' 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Sep 2004 21:16:50 -0000 Daniel Eriksson wrote: >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 >... > I have a suspicion that some of my attempts to stabilse preemption in 4bsd may have a hand in this.. I'm looking at some traces now that may be relevent.. you might try ULE now too as some fixes went in that may have influenced that. > >/Daniel Eriksson > > >_______________________________________________ >freebsd-current@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-current >To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > >