From: Tom Lane <tgl@sss.pgh.pa.us>
To: Josh Berkus <josh@agliodbs.com>
Cc: pgsql-hackers@postgresql.org, "Anjan Kumar. A." <anjankumar@cse.iitb.ac.in>
Cc: pgsql-chat@postgresql.org
Cc: pgsql-benchmarks@postgresql.org
Cc: pgsql-docs@postgresql.org
Subject: Re: [DOCS] [HACKERS] Please Help: PostgreSQL Query Optimizer
Date: Sun, 11 Dec 2005 15:41:36 -0500
Message-ID: <18706.1134333696@sss.pgh.pa.us> (raw)
In-Reply-To: <200512111126.18566.josh@agliodbs.com>
References: <Pine.LNX.4.61.0512111610320.4525@nsl-33.cse.iitb.ac.in>
<200512111126.18566.josh@agliodbs.com>
Josh Berkus <josh@agliodbs.com> writes:
> I don't see why you're increasing the various cpu_* costs.
You missed the point Josh --- these numbers are relative to the cost of
a page fetch, so if page fetch is measured in microseconds instead of
milliseconds, then you *do* want to bump the CPU costs up.
regards, tom lane
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To: pgsql-benchmarks@postgresql.org
Cc: tgl@sss.pgh.pa.us, josh@agliodbs.com, anjankumar@cse.iitb.ac.in, pgsql-chat@postgresql.org, pgsql-docs@postgresql.org
Subject: Re: [DOCS] [HACKERS] Please Help: PostgreSQL Query Optimizer
In-Reply-To: <18706.1134333696@sss.pgh.pa.us>
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