From owner-freebsd-stable@FreeBSD.ORG Wed Dec 29 08:57:41 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 B0CB51065670 for ; Wed, 29 Dec 2010 08:57:41 +0000 (UTC) (envelope-from fvhemert@gmail.com) Received: from mail-yi0-f54.google.com (mail-yi0-f54.google.com [209.85.218.54]) by mx1.freebsd.org (Postfix) with ESMTP id 695DC8FC13 for ; Wed, 29 Dec 2010 08:57:41 +0000 (UTC) Received: by yie19 with SMTP id 19so2212620yie.13 for ; Wed, 29 Dec 2010 00:57:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=jm9L+7HO+O+CwJecrWSpQK4s7pPUy4/eIrAw47cO/HA=; b=i4GCtthq2winPi8R0FPdykM8ZnqSzewEVB5UQX7jV7u1oLs0WNkz/q9JeIZcG/UUPK tvwJnJEaH7FLE/BHkfvC0xscnLmFeKBkpeTP33DzjoZAuJLjdZeFfjRPnj7Tl829raZR dO1tL/L05w+1hm6+F01+9EDt7OEk/Nc0mIFJI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=YHfohafReScfpP6M5qioRoNUR5m7jDr6VhWxQUDIJQZA6/6EdGdNeQI1LmMCIyzfhl x44Z3qSc+rH5YtmODABLDaasA3ZkBfp+YnfDoX6HviBrdwVzwleoLvMNBdmhxhSI09Kj aN1jqU+YoJVTdW77WHYh8Jz+n/r38LaHSnUKQ= MIME-Version: 1.0 Received: by 10.100.164.1 with SMTP id m1mr8393198ane.269.1293613060631; Wed, 29 Dec 2010 00:57:40 -0800 (PST) Received: by 10.101.5.31 with HTTP; Wed, 29 Dec 2010 00:57:40 -0800 (PST) In-Reply-To: <4D1AF388.3080107@infracaninophile.co.uk> References: <4D1AF388.3080107@infracaninophile.co.uk> Date: Wed, 29 Dec 2010 09:57:40 +0100 Message-ID: From: Freek van Hemert To: Matthew Seaman Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-stable@freebsd.org 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 08:57:41 -0000 Thanx for all the replies. The hacks sounds good until 8.2 is released however, regarding this upgrade, is the on-disk format the same? Can I just add the pool to a new install (of 8.2-RC) and expect higher performance? Or do I need to recreate the pool with the newer versions of the utilities? On 29 December 2010 09:38, Matthew Seaman wrote: > 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 copying > > things from my ufs2 disk into the 2TB zpool, it is very slow. I'm on > freebsd > > 8.1 amd64 on an atom n330 with 2 sata disks, gstat tells me I'm going at > > 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 > > -- > 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 > >