From owner-freebsd-net@FreeBSD.ORG Thu Mar 31 07:05:31 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 90FB7106566C; Thu, 31 Mar 2011 07:05:31 +0000 (UTC) (envelope-from lists@yamagi.org) Received: from mail.yamagi.overkill.yamagi.org (unknown [IPv6:2a01:4f8:121:2102:1::7]) by mx1.freebsd.org (Postfix) with ESMTP id 2C5428FC12; Thu, 31 Mar 2011 07:05:31 +0000 (UTC) Received: from [2001:5c0:110d:6600:21b:21ff:fe07:b562] (unknown [IPv6:2001:5c0:110d:6600:21b:21ff:fe07:b562]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.yamagi.overkill.yamagi.org (Postfix) with ESMTPSA id BFEFF16663D1; Thu, 31 Mar 2011 09:05:28 +0200 (CEST) Date: Thu, 31 Mar 2011 09:05:19 +0200 (CEST) From: Yamagi Burmeister X-X-Sender: yamagi@saya.home.yamagi.org To: YongHyeon PYUN In-Reply-To: <20110330202858.GC8601@michelle.cdnetworks.com> Message-ID: References: <20110330173145.GB8601@michelle.cdnetworks.com> <20110330202858.GC8601@michelle.cdnetworks.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-net@freebsd.org, Yamagi Burmeister , yongari@freebsd.org Subject: Re: Kernel memory corruption(?) with age(4) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Mar 2011 07:05:31 -0000 On Wed, 30 Mar 2011, YongHyeon PYUN wrote: >> Okay, I did a test run with RX checksum, TX checksum and both disabled. >> In all three cases the crash occurs within about 20 minutes. I'm either >> not sure that age(4) is the problem but it has definedly something to do >> with the problem, since with another nic driver the same scenario is >> rock solid... >> > > OK. > >> The workload: It's a NFS3 server (FreeBSDs non-experimental >> implementation), serving and receiving file with about 250 to 500 >> megabytes at about 20mb/s. The clients are FreeBSD 7 and 8 systems and >> are mounting the shares via TCP. The connection is 1000mbit/s via a >> "dumb" gigabit switch. >> > > That's too broad to narrow down the issue. :-( > I'm not sure but your box seem to have more than 4GB memory. Could > you limit the available memory to 3GB via loader.conf and test it > again? All boxes are quadcore machines with 8GB RAM, running FreeBSD/amd64. After limiting the memory via hw.physmem to 3GB the problems are gone. The box is running crashfree for more than 6 hours and has served over 300GB of data via age(4). -- Homepage: www.yamagi.org Jabber: yamagi@yamagi.org GnuPG/GPG: 0xEFBCCBCB