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Re: PostgreSQL Arrays and Performance

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> 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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