On Fri, Jul 04, 2003 at 10:07:46AM -0400, Brian Tarbox wrote:
> 512 mb memory, latest production versions of each database. By vanilla
> RedHat I mean that I installed RH on a clean system, said install everything
> and did no customization of RH settings.
Does that include no customization of the Postgres settings?
> We had about 40 tables in the db, with joined queries on about 8-12 tables.
SELECTs only? because. . .
> of records. There were indexes on all join fields, and all join fields were
> listed as foriegn keys. All join fields were unique primary keys in their
. . .you know that FK constraints in Postgres are not cheap, right?
> I did no tuning of MySql. The only tuning for PG was to vacuum and vacuum
> analyze.
This appears to be a "yes" answer to my question above. Out of the
box, PostgreSQL is set up to be able to run on a 1992-vintage SGI
Indy with 8 M of RAM (ok, I may be exaggerating, but only by a bit);
it is not tuned for performance. Running without even tweaking the
shared buffers is guaranteed to get you lousy performance.
A
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