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From: Christophe Pettus <[email protected]>
To: Marcelo Fernandes <[email protected]>
Cc: [email protected]
Subject: Re: Changing default fillfactor for the whole database
Date: Sat, 26 Apr 2025 20:15:42 -0700
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAM2F1VMu747bv5X3wTvhzLQUWRaJzREdaS=coVz+WjxkBjzvng@mail.gmail.com>
References: <CAM2F1VMu747bv5X3wTvhzLQUWRaJzREdaS=coVz+WjxkBjzvng@mail.gmail.com>



> On Apr 26, 2025, at 19:31, Marcelo Fernandes <[email protected]> wrote:
> Does this make sense? Have I missed something about being able to change this
> on a database level?

You haven't missed anything; there's no setting that controls the default for fillfactor.

Everyone's use-case is different, of course, but my feeling is that a correct fillfactor is very sensitive to the insert/update pattern for a particular table, so I'm not sure it makes sense to have a system-wide default.  I can certainly see it being a foot-gun, in setting it to (say) 50 and then some months later creating a table that is going to get very large, but is not update-heavy.

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