Re: using a lot of maintenance_work_mem - Mailing list pgsql-hackers

From Tom Lane
Subject Re: using a lot of maintenance_work_mem
Date
Msg-id 13639.1298058086@sss.pgh.pa.us
Whole thread Raw
In response to Re: using a lot of maintenance_work_mem  (Frederik Ramm <frederik@remote.org>)
List pgsql-hackers
Frederik Ramm <frederik@remote.org> writes:
> The single query where pg9.0 beat pg8.3 by a country mile was a CREATE 
> INDEX statement on a BIGINT column to a table with about 500 million 
> records - this cost 2679 seconds on normal 8.3, 2443 seconds on 
> large-memory 8.3, and aroung 1650 seconds on 9.0, large memory or not.

FWIW, that's probably due to bigint having become pass-by-value on
64-bit platforms.
        regards, tom lane


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