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Re: ZFS vs. UFS

From: Georgi Naplatanov <gosho(at)oles(dot)biz>
To: Laszlo Nagy <gandalf(at)shopzeus(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: ZFS vs. UFS
Date: 2012-07-24 13:03:45
Message-ID: 500E9D31.6050107@oles.biz (view raw or flat)
Thread:
Lists: pgsql-performance
Hi.

As far as I know UFS is faster than ZFS on FreeBSD 9.0.

Some users reported stability problem with ZFS on AMD64 and maybe UFS is 
better choice.

Best regards
Georgi

On 07/24/2012 03:51 PM, Laszlo Nagy wrote:
>
> Hello,
>
> Under FreeBSD 9, what filesystem should I use for PostgreSQL? (Dell
> PowerEdge 2900, 24G mem, 10x2T SATA2 disk, Intel RAID controller.)
>
>     * ZFS is journaled, and it is more independent of the hardware. So
>       if the computer goes wrong, I can move the zfs array to a
>       different server.
>     * UFS is not journaled. Also I have to rely on the RAID card to
>       build the RAID array. If there is a hw problem with it, then I
>       won't be able to recover the data easily.
>
> I wonder if UFS has better performance or not. Or can you suggest
> another fs? Just of the PGDATA directory.
>
> Thanks,
>
> Laszlo
>

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Subject: Re: ZFS vs. UFS
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