From owner-freebsd-stable@FreeBSD.ORG Thu Mar 11 14:08:33 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1BD081065673; Thu, 11 Mar 2010 14:08:33 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from mail.ebusiness-leidinger.de (mail.ebusiness-leidinger.de [217.11.53.44]) by mx1.freebsd.org (Postfix) with ESMTP id 6613E8FC17; Thu, 11 Mar 2010 14:08:32 +0000 (UTC) Received: from outgoing.leidinger.net (pD9E2DD69.dip.t-dialin.net [217.226.221.105]) by mail.ebusiness-leidinger.de (Postfix) with ESMTPSA id 11FA48444D8; Thu, 11 Mar 2010 15:08:26 +0100 (CET) Received: from webmail.leidinger.net (webmail.leidinger.net [192.168.1.102]) by outgoing.leidinger.net (Postfix) with ESMTP id E5BC5542A; Thu, 11 Mar 2010 15:08:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=Leidinger.net; s=outgoing-alex; t=1268316503; bh=DMkCh8DidYAAaGwTEv1a018dtLXIZDuI6Jlt3phmOZo=; h=Message-ID:Date:From:To:Cc:Subject:References:In-Reply-To: MIME-Version:Content-Type:Content-Transfer-Encoding; b=NOL1fV8lCJXp0iH/JcnisWgYTL3AEd4kq9uBMeeb9u7pVDMpDrszTunnAtAYlMeYJ DpYhBieMEocA0337evOknyRmxm2APEuPef049aCegHuH9BYrG+SxicW6RQUZMUCn6v KsI+c3ilPBrDJQEe8+VTgCCInWZlWI4oeiBt0GY+bFyIO5RxDx1RHjvL/W4zTMNtsS 6Jyabcyl73wNX9aYOsBgX+eTerwfZTGjlbiGbyqAYDgMPtAvm4vxvLduq9FWotBR63 E4kDkOk0xG8vC6KgTxyH1KAziqxJDC+YI+b3YRbGtSqjQDNes3EAqeSMaNNAcLkDbj CgNU4/4slVQMA== Received: (from www@localhost) by webmail.leidinger.net (8.14.3/8.13.8/Submit) id o2BE8MTD042722; Thu, 11 Mar 2010 15:08:22 +0100 (CET) (envelope-from Alexander@Leidinger.net) Received: from pslux.cec.eu.int (pslux.cec.eu.int [158.169.9.14]) by webmail.leidinger.net (Horde Framework) with HTTP; Thu, 11 Mar 2010 15:08:22 +0100 Message-ID: <20100311150822.107231cvjvgs9gsg@webmail.leidinger.net> Date: Thu, 11 Mar 2010 15:08:22 +0100 From: Alexander Leidinger To: Borja Marcos References: <864468D4-DCE9-493B-9280-00E5FAB2A05C@lassitu.de> <20100309122954.GE3155@garage.freebsd.pl> <20100309125815.GF3155@garage.freebsd.pl> <20100310110202.GA1715@garage.freebsd.pl> <20100310173143.GD1715@garage.freebsd.pl> <20100311084527.2934034895hvgxaw@webmail.leidinger.net> <764BD545-B86C-47DC-9004-964EB2216AF0@sarenet.es> In-Reply-To: <764BD545-B86C-47DC-9004-964EB2216AF0@sarenet.es> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Dynamic Internet Messaging Program (DIMP) H3 (1.1.4) X-EBL-MailScanner-Information: Please contact the ISP for more information X-EBL-MailScanner-ID: 11FA48444D8.551BF X-EBL-MailScanner: Found to be clean X-EBL-MailScanner-SpamCheck: not spam, spamhaus-ZEN, SpamAssassin (not cached, score=-1.363, required 6, autolearn=disabled, ALL_TRUSTED -1.44, DKIM_SIGNED 0.00, DKIM_VERIFIED -0.00, TW_ZF 0.08) X-EBL-MailScanner-From: alexander@leidinger.net X-EBL-MailScanner-Watermark: 1268921306.69505@9ibt2Iy+sh0nBQqflFRYlw X-EBL-Spam-Status: No Cc: freebsd-fs@FreeBSD.org, Pawel Jakub Dawidek , FreeBSD@FreeBSD.org, Stable Subject: Re: Many processes stuck in zfs X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Mar 2010 14:08:33 -0000 Quoting Borja Marcos (from Thu, 11 Mar 2010 09:54:47 +0100): > > On Mar 11, 2010, at 8:45 AM, Alexander Leidinger wrote: > >> Quoting Pawel Jakub Dawidek (from Wed, 10 Mar >> 2010 18:31:43 +0100): >> >> There is a 4th possibility, if you can rule out everything else: >> bugs in the CPU. I stumbled upon this with ZFS (but UFS was >> exposing the problem much faster). The problem in my case was that >> the BIOS was not recognizing the CPU and as such was not uploading >> microcode updates. >> >> Borja, can you confirm that the CPU is correctly announced in >> FreeBSD (just look at "dmesg | grep CPU:" output, if it tells you >> it is a AMD or Intel XXX CPU it is correctly detected by the BIOS)? > > A CPU bug? Weird. Very. It depends. CPUs have bugs. You do not want to run any modern CPU without an microcode update. The BIOS is doing it for you at system start. I do not want to say that this is the problem you have, I just want to point out that it may be possible (but see below). I got hit by this last december and I was finding the solution (replacing the complete system, as only replacing the CPU was not an option) in January. > As the servers had to be rolled into production, and such tests with > real servers can be quite time consuming, I set up a couple of > FreeBSD virtual machines, using VMWare Fusion (version 2 then, now > version 3) on a Macbook (Macbook 4,1 Intel Core2Duo, 2.1 GHz) and > tried to reproduce it. > Timecounter "i8254" frequency 1193182 Hz quality 0 > CPU: Intel(R) Xeon(R) CPU L5420 @ 2.50GHz (2496.25-MHz > K8-class CPU) > Origin = "GenuineIntel" Id = 0x1067a Stepping = 10 > The virtual machine (VMWare Fusion 3.0.0, Macbook, Mac OS X 10.6.2) > reports this: > Timecounter "i8254" frequency 1193182 Hz quality 0 > CPU: Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz (2116.62-MHz > K8-class CPU) > Origin = "GenuineIntel" Id = 0x10676 Stepping = 6 Summary: you confirmed the problem on a different kind of CPU. Because of this it makes it even more unlikely that it is a CPU problem. Bye, Alexander. -- A good plan today is better than a perfect plan tomorrow. -- Patton http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137