On Tue, 30 Oct 2001, Zeugswetter Andreas SB SD wrote:
> You could somewhat speed up the query if you avoid that the sort
> hits the disk. A simple test here showed, that you need somewhere
> near sort_mem = 15000 in postgresql.conf.
Well this are the usual hints from pgsql-general. I did so and
increased step by step to:
shared_buffers = 131072 sort_mem = 65536
This lead to a double of speed in my tests but this are settings where
an enhancement of memory doesn´t result in a speed increase any more.
When I was posting my question here I was talking about this "tuned"
PostgreSQL server. The default settings where even worse!
Kind regards
Andreas.