From: | Szymon Guz <mabewlun(at)gmail(dot)com> |
---|---|
To: | PostgreSQL general <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Tuple storage overhead |
Date: | 2010-04-16 10:40:21 |
Message-ID: | m2we4edc9361004160340ya5ed1c07t73d3727069041992@mail.gmail.com |
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2010/4/16 Peter Bex <Peter(dot)Bex(at)xs4all(dot)nl>
> On Fri, Apr 16, 2010 at 11:59:38AM +0200, Szymon Guz wrote:
> > File pages are not fully filled from the start as that could result in
> bad
> > performance of queries later.
>
> The manual page you linked to says something else:
> "The fillfactor for a table is a percentage between 10 and 100.
> 100 (complete packing) is the default."
>
> However, the index has a default fill factor of 90, so I guess
> I can tweak that to 100 to shave off another few percent.
> (there will be no updates nor extra inserts on these tables)
>
> Thanks for the tip! I hope there are more ways to tweak it, though
> because this doesn't save that much.
>
>
I thought that the default fillfactor was much smaller (and haven't checked
that now)... sorry for messing that up.
But let's think of it from the other side: what do you want to do with that
data? Maybe PostgreSQL with it's MVCC's overhead isn't the best solution for
your needs.
regards
Szymon Guz
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