From owner-freebsd-current@FreeBSD.ORG Wed Nov 10 23:35:01 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 65B5A16A4CE; Wed, 10 Nov 2004 23:35:01 +0000 (GMT) Received: from hotmail.com (bay2-dav10.bay2.hotmail.com [65.54.246.114]) by mx1.FreeBSD.org (Postfix) with ESMTP id 39A6243D53; Wed, 10 Nov 2004 23:35:01 +0000 (GMT) (envelope-from tssajo@hotmail.com) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 10 Nov 2004 15:35:00 -0800 Received: from 24.24.201.219 by BAY2-DAV10.phx.gbl with DAV; Wed, 10 Nov 2004 23:34:58 +0000 X-Originating-IP: [24.24.201.219] X-Originating-Email: [tssajo@hotmail.com] X-Sender: tssajo@hotmail.com From: "Zoltan Frombach" To: =?iso-8859-1?Q?S=F8ren_Schmidt?= , "Robert Watson" References: <41921CC4.5010802@DeepCore.dk> Date: Wed, 10 Nov 2004 15:35:02 -0800 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Message-ID: X-OriginalArrivalTime: 10 Nov 2004 23:35:00.0989 (UTC) FILETIME=[E59652D0:01C4C77D] cc: freebsd-current@freebsd.org Subject: Re: 5.3-RELEASE: WARNING - WRITE_DMA interrupt timout - what does it mean? 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: Wed, 10 Nov 2004 23:35:01 -0000 So I should not apply that patch then? Right? Then what should I do to try to help the developers tracking down this problem? Any ideas, anyone? I get this warning without any heavy load or traffic yesterday twice. I'm sure it will happen again. Fortunately, in my case, it doesn't cause any program to malfunction or anything bad. In my case it really seems to be just a warning message. Not like for Frode Nordahl. I'd like to help testing, if anyone wants to send me a new patch, send it and I'll test it. Zoltan ----- Original Message ----- From: "Søren Schmidt" To: "Robert Watson" Cc: "Zoltan Frombach" ; Sent: Wednesday, November 10, 2004 5:51 AM Subject: Re: 5.3-RELEASE: WARNING - WRITE_DMA interrupt timout - what does it mean? Robert Watson wrote: > On Wed, 10 Nov 2004, Søren Schmidt wrote: > > >>>I'm still a bit skeptical that the task queue is at fault -- I run my >>>notebook with continuous measurement of the latency to schedule tasks, >>>generating a warning for any latency > .5 seconds, and the only time I >>>ever see that sort of latency is during the boot process when ACPI has >>>scheduled a task to run, but the task queue thread has not yet been >>>allowed to run: >> >>Right, the timeout is 5 secs. I havn't looked into how the taskqueues >>are handled recently, but in case of ATA read/writes it is the >>bio_taskqueue handled by geom thats in use not the catchall ones, does >>your timing cover that as well? > > > Nope -- I had assumed that the suggested task problems in question was the > use of taskqueue_enqueue() in ata-queue for the timeout, rather than the > bio_taskqueue() ata_completed() call. OK, then there is no idea in trying the patch, it wont tell us anything. -- -Søren