Re: Extent size

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: a(dot)schmitz(at)cityweb(dot)de
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Extent size
Date: 2002-10-01 16:56:30
Message-ID: 200210011656.g91GuUP27629@candle.pha.pa.us
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Andreas Schmitz wrote:
> On Tuesday 01 October 2002 17:18, Bruce Momjian wrote:
> > Andreas Schmitz wrote:
> > > Hello *,
> > >
> > > is there any way in postgres to define the size of extents ?
> >
> > We don't have extents like Informix. We use the file system so size is
> > unlimited. I think that answers your question.
>
> Not really. If I want to store data in a efficient way I normally have a look
> at the size of the data. lets say I've got text blocks of 1.5 kb. I would
> consider to choose an extent size of 2kb instead of 4 kb to save up space.
> Which would be the right consideration for postgres ?

We don't do such optimizations and consider them of limited value. Our
pages are 8k, and we have backup tables for long values.

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