From owner-freebsd-stable@FreeBSD.ORG Fri Feb 26 10:06:07 2010 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5186E106568A for ; Fri, 26 Feb 2010 10:06:07 +0000 (UTC) (envelope-from wjw@digiware.nl) Received: from mail.digiware.nl (mail.ip6.digiware.nl [IPv6:2001:4cb8:1:106::2]) by mx1.freebsd.org (Postfix) with ESMTP id 107778FC1D for ; Fri, 26 Feb 2010 10:06:07 +0000 (UTC) Received: from localhost (localhost.digiware.nl [127.0.0.1]) by mail.digiware.nl (Postfix) with ESMTP id 69F6E153433; Fri, 26 Feb 2010 11:06:06 +0100 (CET) X-Virus-Scanned: amavisd-new at digiware.nl Received: from mail.digiware.nl ([127.0.0.1]) by localhost (rack1.digiware.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ghFWlfyrV2pj; Fri, 26 Feb 2010 11:06:04 +0100 (CET) Received: from [192.168.10.67] (opteron [192.168.10.67]) by mail.digiware.nl (Postfix) with ESMTP id 5096C15342F; Fri, 26 Feb 2010 11:06:04 +0100 (CET) Message-ID: <4B879D7E.70809@digiware.nl> Date: Fri, 26 Feb 2010 11:07:58 +0100 From: Willem Jan Withagen Organization: Digiware User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1 MIME-Version: 1.0 To: =?ISO-8859-1?Q?Gerrit_K=FChn?= References: <4B86F384.3010308@digiware.nl> <2a41acea1002251459v40e8c6ddxd0437decbada4594@mail.gmail.com> <4B8795B1.4020006@digiware.nl> <20100226105829.82ba37c4.gerrit@pmp.uni-hannover.de> In-Reply-To: <20100226105829.82ba37c4.gerrit@pmp.uni-hannover.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Cc: stable@freebsd.org, Jack Vogel Subject: Re: em0 freezes on ZFS server 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: Fri, 26 Feb 2010 10:06:07 -0000 On 26-2-2010 10:58, Gerrit Kühn wrote: > On Fri, 26 Feb 2010 10:34:41 +0100 Willem Jan Withagen > wrote about Re: em0 freezes on ZFS server: > > WJW> Probably the reason why this happened yesterday is that I started > WJW> doing major software builds (over ZFS/NFS/TCP/v3) against data stored > WJW> on this box. > > I saw a similar problem this morning and suppose it started when some > automatic backup jobs started last night. A unstable em device is a rather > bad thing, I hope increasing the buffer (mine is at 64000 now) prevents > this from happening again. In my case it started indeed when I raised the volume of traffic. Probably I tripled it. Thanx for confirming like features. I have no proof that it used to work, or something like that. Since this is my first ZFS box, first Areca controller. So going back in time to see if it just regression somewhere is rather hard. And Yes, unstable em-device is a pain, since uptill now I considered the Intel chips/driver as a constant steady-state factor in my networking life. (would only buy/recommend Intel) I'm not shure it is the chipset/driver combo,could be that something in the innards of the kernel has severly changed and just starts stressing a lot more. --WjW