On Fri, Aug 06, 2010 at 03:10:30PM +1000, Data Growth Pty Ltd wrote: > Is there any significant performance problem associated with partitioning > a table into 2500 sub-tables? I realise a table scan would be horrendous, > but what if all accesses specified the partitioning criteria "sid". Such > a scheme would be the simplest to maintain (I think) with the best > localisation of writes.
I seem to remember some discussion on pgsql-hackers recently about the number of partitions and its effect on performance, especially planning time. Unfortunately I can't find it right now, but in general the conclusion was it's bad to have lots of partitions, where "lots" is probably 100 or more. -- Joshua Tolley / eggyknap End Point Corporation http://www.endpoint.com
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