From owner-freebsd-net@FreeBSD.ORG Mon Apr 7 08:32:45 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E4986318; Mon, 7 Apr 2014 08:32:44 +0000 (UTC) Received: from mail-pd0-x230.google.com (mail-pd0-x230.google.com [IPv6:2607:f8b0:400e:c02::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id ABBD3B23; Mon, 7 Apr 2014 08:32:44 +0000 (UTC) Received: by mail-pd0-f176.google.com with SMTP id r10so6241004pdi.35 for ; Mon, 07 Apr 2014 01:32:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:date:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=Sb0FZg9bxMmAXVsjBw0ow7cRBIsOWgeEQKlPWQQblDw=; b=ZB521wF//gQPRhx193el44RmpUJHjFypFQT0dtQqPBnSvPbLV/M2n0pFO36AbWNvph AqXnGcR2QBjJsygkRll7BZigPNvTnGZKIJI+os4rAZXPiqoMCTevH57Ux8H4nhHipuK7 npZxjTXZrxlMCm1qhiVfQkeEKEXlBR8hwGjqPRvaGH4Q4mkIP6L/E2nF+cGKZ/ezqY7R jAZELPRxrsHtqoy7Yygksn3tUdUCqp37F6qk58TjQrUDzBBfcQLZhWgm1nlaRYPMmXIG E2rJXNkYdY9YbeyLOlR5dTM1ONPUkr9JZu43v9nZxf6bv9quvWKJQT09B3W6jEADi6aQ Bu7w== X-Received: by 10.68.138.227 with SMTP id qt3mr29962514pbb.6.1396859564244; Mon, 07 Apr 2014 01:32:44 -0700 (PDT) Received: from pyunyh@gmail.com (lpe4.p59-icn.cdngp.net. [114.111.62.249]) by mx.google.com with ESMTPSA id tk5sm35111366pbc.63.2014.04.07.01.32.40 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 07 Apr 2014 01:32:43 -0700 (PDT) Received: by pyunyh@gmail.com (sSMTP sendmail emulation); Mon, 07 Apr 2014 17:32:37 +0900 From: Yonghyeon PYUN Date: Mon, 7 Apr 2014 17:32:37 +0900 To: Frank Volf Subject: Re: re0: watchdog timeout Message-ID: <20140407083236.GB1357@michelle.cdnetworks.com> References: <53418053.5020105@deze.org> <280407068.6916295.1396827428537.JavaMail.root@uoguelph.ca> <20140407012241.GA3543@michelle.cdnetworks.com> <53424100.7030103@deze.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53424100.7030103@deze.org> User-Agent: Mutt/1.4.2.3i Cc: freebsd-net@freebsd.org, marius@freebsd.org, Rick Macklem , yongari@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Apr 2014 08:32:45 -0000 On Mon, Apr 07, 2014 at 08:09:04AM +0200, Frank Volf wrote: > Yonghyeon PYUN schreef op 7-4-2014 3:22: > >On Sun, Apr 06, 2014 at 07:37:08PM -0400, Rick Macklem wrote: > >>Frank Volf wrote: > >>>Hello, > >>> > >>>I'm experiencing watchdog timeouts with my Realtek interface card. > >>> > >>>I'm using a fairly new system (Shuttle DS47), running FreeBSD > >>>10-STABLE. > >>>For this shuttle a patch has been recently committed to SVN to make > >>>this > >>>card work at all (revision *262391* > >>>). > >>> > >>>The timeout is only experienced under heavy network load (the system > >>>is > >>>running a bacula backup server that backups to NFS connected > >>>storage), > >>>and typically large full backups trigger this. Normal traffic works > >>>fine > >>>(this system is e.g. also my firewall to the Internet). > >>> > >>Since you mention NFS, you could try disabling TSO on the interface > >>and see if that helps. (I'm beginning to feel like a parrot saying this, > >>but...) If you care about why it might help, read this email thread: > >> http://docs.FreeBSD.org/cgi/mid.cgi?1850411724.1687820.1395621539316.JavaMail.root > >> > >>If it happens to help, please email again, since there are probably > >>better ways to fix the problem than disabling TSO. > >> > >re(4) controllers support TSO but it was disabled long time > >ago(r217832). > >It's still allowed to enable TSO but users have to explicitly > >enable it with ifconfig. If Frank didn't explicitly enable TSO on > >the box, TSO may have nothing to do with watchdog timeout, I guess. > > I haven't explicitly enabled TSO, the only option that has been > explicitly set is -vlanhwtag, here is the interface config: > > re0: flags=8843 metric 0 mtu 1500 > options=8208b > ether 80:ee:73:77:e9:ab > nd6 options=29 > media: Ethernet autoselect (1000baseT ) > status: active > It would be even better to know your network configuration. I'm not sure why you have to disable VLAN hardware tagging. But given that you've disabled it, could you also try disabling VLAN hardware checksum offloading? > > Regards, > > Frank >