From owner-freebsd-fs@FreeBSD.ORG Sat Feb 27 21:53:03 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 327D81065670; Sat, 27 Feb 2010 21:53:03 +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 B68EB8FC1A; Sat, 27 Feb 2010 21:53:02 +0000 (UTC) Received: from localhost (localhost.digiware.nl [127.0.0.1]) by mail.digiware.nl (Postfix) with ESMTP id E7817153433; Sat, 27 Feb 2010 22:53:00 +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 m54sQjbHQmCK; Sat, 27 Feb 2010 22:52:59 +0100 (CET) Received: from [127.0.0.1] (unknown [192.168.10.212]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.digiware.nl (Postfix) with ESMTPSA id 024BF15342F; Sat, 27 Feb 2010 22:52:59 +0100 (CET) Message-ID: <4B89943C.70704@digiware.nl> Date: Sat, 27 Feb 2010 22:53:00 +0100 From: Willem Jan Withagen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.8) Gecko/20100216 Thunderbird/3.0.2 MIME-Version: 1.0 To: =?ISO-8859-1?Q?Eirik_=D8verby?= References: <20100226141754.86ae5a3f.gerrit@pmp.uni-hannover.de> <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> <20100226224320.8c4259bf.gerrit@pmp.uni-hannover.de> <4B884757.9040001@digiware.nl> <20100227080220.ac6a2e4d.gerrit@pmp.uni-hannover.de> <4B892918.4080701@digiware.nl> <20100227202105.f31cbef7.gerrit@pmp.uni-hannover.de> <20100227193819.GA60576@icarus.home.lan> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Cc: freebsd-fs@freebsd.org, stable@freebsd.org, Jeremy Chadwick , =?ISO-8859-1?Q?Gerrit_K?= Subject: Re: mbuf leakage with nfs/zfs? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Feb 2010 21:53:03 -0000 On 27-2-2010 21:32, Eirik Øverby wrote: > I've had a discussion with some folks on this for a while. I can easily > reproduce this situation by mounting a FreeBSD ZFS filesystem via > NFS-UDP from an OpenBSD machine. Telling the OpenBSD machine to use TCP > instead of UDP makes the problem go away. > > Other FreeBSD systems mounting the same share, either using UDP or TCP, > does not cause the problem to show up. > > A patch was suggested by Rick Macklem, but that did not solve the issue: > http://lists.freebsd.org/pipermail/freebsd-current/2009-December/014181.html I concur. Everything in my network is now on TCP, and there is no mbuf leakage. I just don't get over the 5500 mark, no matter what I throw at it. I do feel that TCP is not as well performing on a local net with Linux, hence the choice for UDP. But TCP is workable as next best. --WjW