Re: Data Warehouse Reevaluation - MySQL vs Postgres -- merge tables - Mailing list pgsql-performance

From Vivek Khera
Subject Re: Data Warehouse Reevaluation - MySQL vs Postgres -- merge tables
Date
Msg-id x7pt4ou2n1.fsf@yertle.int.kciLink.com
Whole thread Raw
In response to Re: Data Warehouse Reevaluation - MySQL vs Postgres -- merge tables  (Mark Cotner <mcotner@yahoo.com>)
List pgsql-performance
>>>>> "MC" == Mark Cotner <mcotner@yahoo.com> writes:

MC> I've finished porting the schema and am importing the
MC> data now.  My estimates for just two-thirds(60 of the
MC> 90 days) of one of our 30 cable systems(MySQL dbs) is
MC> estimated to take about 16 hours.  This may seem like
MC> a lot, but I'm satisfied with the performance.  I've

be sure to load your data without indexes defined for your initial
import.

check your logs to see if increasing checkpoint_segments is
recommended.  I found that bumping it up to 50 helped speed up my
data loads (restore from dump) significantly.

--
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Vivek Khera, Ph.D.                Khera Communications, Inc.
Internet: khera@kciLink.com       Rockville, MD  +1-301-869-4449 x806
AIM: vivekkhera Y!: vivek_khera   http://www.khera.org/~vivek/

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