Tatsuo,
> Sigh. People always complain "pgbench does not reliably producing
> repeatable numbers" or something then say "that's because pgbench's
> transaction has too much contention on the branches table". So I added
> -N option to pgbench which makes pgbench not to do any UPDATE to
> the branches table. But still people continue to complian...
Hey, pg_bench is a good start on a Postgres performance tester, and it's much,
much better than what there was before you came along ... which was nothing.
Thank you again for contributing it.
pg_bench is, however, only a start on a performance tester, and we'd need to
build it up before we could use it as the basis of a PG tuner.
--
Josh Berkus
Aglio Database Solutions
San Francisco