From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Kevin Brown <kevin(at)sysexperts(dot)com> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Tuning scenarios (was Changing the default configuration) |
Date: | 2003-02-14 15:05:44 |
Message-ID: | 7027.1045235144@sss.pgh.pa.us |
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Lists: | pgsql-advocacy pgsql-hackers pgsql-performance |
Kevin Brown <kevin(at)sysexperts(dot)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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