Re: Optimizer(?) off by factor of 3 ... ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Marc G(dot) Fournier" <scrappy(at)hub(dot)org>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Optimizer(?) off by factor of 3 ... ?
Date: 2002-02-12 02:15:12
Message-ID: 18859.1013480112@sss.pgh.pa.us
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I'm trying to work out how the planner arrived at the numbers you're
showing; the hashjoin cost estimate seems a little lower than I'd
expect. Are you using nonstandard values for any of the planner cost
factors? (cpu_operator_cost, etc) How about sort_mem?

regards, tom lane

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