| From: | "Tille, Andreas" <TilleA(at)rki(dot)de> |
|---|---|
| To: | |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Serious performance problem |
| Date: | 2001-10-30 12:46:22 |
| Message-ID: | Pine.LNX.4.33.0110301342320.6117-100000@wr-linux02.rki.ivbb.bund.de |
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| Lists: | pgsql-hackers |
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.
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