From owner-freebsd-fs@FreeBSD.ORG Thu Jun 10 08:17:16 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 8C2421065672 for ; Thu, 10 Jun 2010 08:17:16 +0000 (UTC) (envelope-from peterjeremy@acm.org) Received: from mail10.syd.optusnet.com.au (mail10.syd.optusnet.com.au [211.29.132.191]) by mx1.freebsd.org (Postfix) with ESMTP id A86A08FC16 for ; Thu, 10 Jun 2010 08:17:14 +0000 (UTC) Received: from server.vk2pj.dyndns.org (c211-30-160-13.mirnd2.nsw.optusnet.com.au [211.30.160.13] (may be forged)) by mail10.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id o5A8HBce013897 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 10 Jun 2010 18:17:12 +1000 X-Bogosity: Ham, spamicity=0.000000 Received: from server.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by server.vk2pj.dyndns.org (8.14.4/8.14.4) with ESMTP id o5A8HAgm064684; Thu, 10 Jun 2010 18:17:10 +1000 (EST) (envelope-from peter@server.vk2pj.dyndns.org) Received: (from peter@localhost) by server.vk2pj.dyndns.org (8.14.4/8.14.4/Submit) id o5A8HAFU064683; Thu, 10 Jun 2010 18:17:10 +1000 (EST) (envelope-from peter) Date: Thu, 10 Jun 2010 18:17:10 +1000 From: Peter Jeremy To: Anders Nordby Message-ID: <20100610081710.GA64350@server.vk2pj.dyndns.org> References: <20100608083649.GA77452@fupp.net> <20100609122517.GA16231@fupp.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="82I3+IH0IqGh5yIs" Content-Disposition: inline In-Reply-To: <20100609122517.GA16231@fupp.net> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.20 (2009-06-14) Cc: freebsd-fs@FreeBSD.org Subject: Re: Odd network issues on ZFS based NFS server 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: Thu, 10 Jun 2010 08:17:16 -0000 --82I3+IH0IqGh5yIs Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2010-Jun-09 14:25:17 +0200, Anders Nordby wrote: >Thanks. The only thing that (temporarily) solves this issue so far is >rebooting, which helps only for a day or so. I have tried different >NICs, replacing the physical server, replacing cables, changing and >resetting switch ports. But it did not help, so I think this is a >software problem. I will try zio_use_uma =3D 0 I think, and then try to >limit vfs.zfs.arc_max to 100 MB or so. I wonder if your system is running out of free RAM. How would you like to monitor "inactive", "cache" and "free" from either "systat -v" or "vmstat -s" whilst the problem is occurring. Does something like perl -e '$x =3D "x" x 10000000;' temporarily correct the problem? --=20 Peter Jeremy --82I3+IH0IqGh5yIs Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAkwQn4YACgkQ/opHv/APuIcB1wCgrdULTyjAmBBdPnx1t0b4XFSj bU8AoLvsCgKcm2xInLijQgSYP/5jt/5W =sJDK -----END PGP SIGNATURE----- --82I3+IH0IqGh5yIs--