Re: PostgreSQL Arrays and Performance - Mailing list pgsql-general

From Marc Philipp
Subject Re: PostgreSQL Arrays and Performance
Date
Msg-id 1136712142.9076.22.camel@localhost.localdomain
Whole thread Raw
In response to Re: PostgreSQL Arrays and Performance  (Joe Conway <mail@joeconway.com>)
Responses Re: PostgreSQL Arrays and Performance
List pgsql-general
> This sounds like it has more to do with inadequate freespace map
> settings than use of arrays. Every update creates a dead tuple, and
> if
> it is large (because the array is large) and leaked (because you have
> no
> room in your freespace map), that would explain a rapidly increasing
> database size.

Can you tell me more about free-space map settings? What exactly is the
free-space map? The information in the documentation is not very
helpful. How can dead tuples leak?

Regards, Marc Philipp



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