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From: Alex Turner <armtuk@gmail.com>
To: Martin Fandel <martin.fandel@alphyra-evs.de>
Cc: pgsql-performance@postgresql.org
Subject: Re: Filesystem
Date: Fri, 3 Jun 2005 09:18:10 -0400
Message-ID: <33c6269f050603061824b0cdbf@mail.gmail.com> (raw)
In-Reply-To: <1117782401.4380.37.camel@fandelm.ecommit.de>
References: <1117782401.4380.37.camel@fandelm.ecommit.de>

We have been using XFS for about 6 months now and it has even tolerated a 
controller card crash. So far we have mostly good things to report about 
XFS. I benchmarked raw throughputs at various stripe sizes, and XFS came out 
on top for us against reiser and ext3. I also used it because of it's 
supposed good support for large files, which was verified somewhat by the 
benchmarks.

I have noticed a problem though - if you have 800000 files in a directory, 
it seems that XFS chokes on simple operations like 'ls' or 'chmod -R ...' 
where ext3 doesn't, don't know about reiser, I went straight back to default 
after that problem (that partition is not on a DB server though).

Alex Turner
netEconomist

On 6/3/05, Martin Fandel <martin.fandel@alphyra-evs.de> wrote:
> 
> Hi @ all,
> 
> i have only a little question. Which filesystem is preferred for
> postgresql? I'm plan to use xfs (before i used reiserfs). The reason
> is the xfs_freeze Tool to make filesystem-snapshots.
> 
> Is the performance better than reiserfs, is it reliable?
> 
> best regards,
> Martin
> 
> 
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