Horton

Re: [WIP] cache estimates, cache access cost

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Cédric Villemain <cedric.villemain.debian@gmail.com>
Cc: Greg Stark <stark@mit.edu>, Greg Smith <greg@2ndquadrant.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2011-06-20T00:49:19Z
Lists: pgsql-hackers 
On Sun, Jun 19, 2011 at 3:32 PM, Cédric Villemain
<cedric.villemain.debian@gmail.com> wrote:
> 2nd, I provided the patches on the last CF, exactly to allow to go to
> the exciting part: the cost-estimates changes. (after all, we can work
> on the cost estimate, and if later we find a way to use ALTER TABLE or
> pg_class_ng, just do it instead of via the ANALYZE magic)

We're talking past each other here, somehow.  The cost-estimating part
does not require this patch in order to something useful, but this
patch, AFAICT, absolutely does require the cost-estimating part to do
something useful.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company