From owner-freebsd-stable@FreeBSD.ORG Wed Dec 29 08:38:43 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 340501065672 for ; Wed, 29 Dec 2010 08:38:43 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3fd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id 8A0D28FC08 for ; Wed, 29 Dec 2010 08:38:42 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id oBT8cdAt017095 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Wed, 29 Dec 2010 08:38:40 GMT (envelope-from m.seaman@infracaninophile.co.uk) X-DKIM: Sendmail DKIM Filter v2.8.3 smtp.infracaninophile.co.uk oBT8cdAt017095 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=infracaninophile.co.uk; s=201001-infracaninophile; t=1293611920; bh=L/1UmTlN7ZzbyJaWTyR+YfDGdNr4J7CIAgwXo9AdQj0=; h=Message-ID:Date:From:MIME-Version:To:Subject:References: In-Reply-To:Content-Type:Cc:Content-Type:Date:From:In-Reply-To: Message-ID:Mime-Version:References:To; z=Message-ID:=20<4D1AF388.3080107@infracaninophile.co.uk>|Date:=20W ed,=2029=20Dec=202010=2008:38:32=20+0000|From:=20Matthew=20Seaman= 20|User-Agent:=20Mozilla/5.0=20(M acintosh=3B=20U=3B=20Intel=20Mac=20OS=20X=2010.6=3B=20en-US=3B=20r v:1.9.2.13)=20Gecko/20101207=20Thunderbird/3.1.7|MIME-Version:=201 .0|To:=20freebsd-stable@freebsd.org|Subject:=20Re:=20slow=20ZFS=20 on=20FreeBSD=208.1|References:=20|In-Reply-To:=20|X-Enigmail-Version:=201. 1.1|OpenPGP:=20id=3D60AE908C|Content-Type:=20multipart/signed=3B=2 0micalg=3Dpgp-sha1=3B=0D=0A=20protocol=3D"application/pgp-signatur e"=3B=0D=0A=20boundary=3D"------------enig09AC943CBD333172A390312A "; b=veMh6Fg8wc6ELtqgRmAzx0zGqLNQKQesgM2k2P4UmNqYVOBrRMOTwumOIy9rg2lYf CSYN3A8Gq6HMpkNnWwtD/aDSMsUKZ8VWrjzdZXVnxLV7XX8s87L8WTcfTkpgscAef3 p12Rn1/3jFg0m51rBhoNDyXzv6X0sMYwWMZKFCV4= Message-ID: <4D1AF388.3080107@infracaninophile.co.uk> Date: Wed, 29 Dec 2010 08:38:32 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: In-Reply-To: X-Enigmail-Version: 1.1.1 OpenPGP: id=60AE908C Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig09AC943CBD333172A390312A" X-Virus-Scanned: clamav-milter 0.96.5 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-0.1 required=5.0 tests=BAYES_20,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_FAIL autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on lucid-nonsense.infracaninophile.co.uk Subject: Re: slow ZFS on FreeBSD 8.1 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: Wed, 29 Dec 2010 08:38:43 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig09AC943CBD333172A390312A Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 28/12/2010 23:56, Freek van Hemert wrote: > I have a question regarding zfs on freebsd. > (I'm making a home server) > This afternoon I did a "zpool create data mirror ad4 ad6" Now I'm copyi= ng > things from my ufs2 disk into the 2TB zpool, it is very slow. I'm on fr= eebsd > 8.1 amd64 on an atom n330 with 2 sata disks, gstat tells me I'm going a= t > around 2 mbps at near 100 %busy while the ufs2 drives are near 0. Also= , > ufs2 to ufs2 was much faster (I estimate about 10 times faster). How do= I > tune? The wiki is not helpful for amd64 users stating that the defaults= > should be optimal. I'm using the 8.1-stable version which has just been= > installed this afternoon from a minimal install iso. Upgrade to one of the 8.2 release candidates or to a recent RELENG_8 / stable/8 -- there has been serious work done on ZFS since 8.1-RELEASE including the import of ZFS v15, and it is a lot more performant. Or wait a few weeks and then upgrade to 8.2-RELEASE. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enig09AC943CBD333172A390312A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk0a848ACgkQ8Mjk52CukIwd5gCfbVjGc+6ayr0vW10I01rPIUW7 uOAAnivSlVXSJgCbCy6++ZI1ozrQK6NU =ndoa -----END PGP SIGNATURE----- --------------enig09AC943CBD333172A390312A--