Re: Tuning scenarios (was Changing the default configuration)

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kevin Brown <kevin@sysexperts.com>
Cc: pgsql-performance@postgresql.org
Date: 2003-02-14T15:05:44Z
Lists: pgsql-hackers, pgsql-performance
Kevin Brown <kevin@sysexperts.com> writes:
> Tom Lane wrote:
>> ...  But those same
>> limitations cause the results to be unstable from run to run, which
>> is why I don't have a lot of faith in reports of pgbench numbers.
>> You need to work quite hard to get reproducible numbers out of it.

> The interesting question is whether that's more an indictment of how
> PG does things or how pg_bench does things.

I didn't draw a conclusion on that ;-).  I merely pointed out that the
numbers are unstable, and therefore not to be trusted without a great
deal of context ...

			regards, tom lane