Re: TPC-R benchmarks - Mailing list pgsql-performance

From Tom Lane
Subject Re: TPC-R benchmarks
Date
Msg-id 10130.1065046783@sss.pgh.pa.us
Whole thread Raw
In response to Re: TPC-R benchmarks  (Oleg Lebedev <oleg.lebedev@waterford.org>)
List pgsql-performance
Oleg Lebedev <oleg.lebedev@waterford.org> writes:
> All right, my query just finished running with EXPLAIN ANALYZE.
> I show the plan below and also attached it as a file.
> Any ideas?

Uh, have you done an ANALYZE (or VACUUM ANALYZE) on this database?
It sure looks like the planner thinks the tables are a couple of orders
of magnitude smaller than they actually are.  Certainly the estimated
sizes of the joins are way off :-(

If you did analyze, it might help to increase the statistics target and
re-analyze.

            regards, tom lane

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