Re: Tuning scenarios (was Changing the default configuration) - Mailing list pgsql-performance

From Tom Lane
Subject Re: Tuning scenarios (was Changing the default configuration)
Date
Msg-id 7027.1045235144@sss.pgh.pa.us
Whole thread Raw
In response to Re: Tuning scenarios (was Changing the default configuration)  (Kevin Brown <kevin@sysexperts.com>)
List 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

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