Jeremy Palmer <jpal...@linz.govt.nz> wrote:
 
> Kevin I've now clustered the table. And the performance did
> increase quite a bit.
 
Yeah, that's enough to notice the difference.
 
> My only question is how often will I need to re-cluster the table,
> because it comes at quite a cost. The setup I'm running will mean
> that 10,000 new rows will be inserted, and 2,500 rows will be
> updated on this table each day.
 
You're going to see performance drop off as the data fragments. 
You'll need to balance the performance against maintenance
down-time.  I would guess, though, that if you have a weekly
maintenance window big enough to handle the CLUSTER, it might be
worth doing it that often.
 
-Kevin

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