Date: Wed, 29 Dec 2010 09:57:40 +0100 From: Freek van Hemert <fvhemert@gmail.com> To: Matthew Seaman <m.seaman@infracaninophile.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: slow ZFS on FreeBSD 8.1 Message-ID: <AANLkTim2oV3phJ4bTFL_ENNZYknm7Gjt_3uFdMd1UpYd@mail.gmail.com> In-Reply-To: <4D1AF388.3080107@infracaninophile.co.uk> References: <AANLkTinfYync_BG3zV028Or4ZgHe5iQ2tLVd1mn4a0r%2B@mail.gmail.com> <4D1AF388.3080107@infracaninophile.co.uk>
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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 <m.seaman@infracaninophile.co.uk>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 > >
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