Hi,
Anyone have comparisons/benchmarks to give some
idea of the potential performance gains?
Say compared to doing the stuff here:
http://www.postgresql.org/docs/8.2/static/populate.html
Regards,
Link.
At 09:35 AM 11/5/2007, Toru SHIMOGAKI wrote:
Dimitri, thank you for your quoting. I'm a pg_bulkload author.
pg_bulkload is optimized especially for appending data to table with indexes.
If you use it, you don't need to drop index
before loading data. But you have to consider
conditions carefully as Dimitri said below. See also pg_bulkload README:
http://pgfoundry.org/docman/view.php/1000261/473/README.pg_bulkload-2.2.0.txt
Best regards,
Dimitri Fontaine wrote:
Hi,
Le Sunday 04 November 2007 11:22:19 Reg Me Please, vous avez écrit :
That is, should I drop all indexes during a "COPY ... FROM" in order to
gain the maximum speed to load data?
When looking for a way to speed up data
loading, you may want to consider pgbulkload, a
project which optimizes index creation while
loading data, and bypass constraints: it's
useful when you know you trust input.
As I've never used it myself, I can only provides following links:
http://pgfoundry.org/projects/pgbulkload
http://pgfoundry.org/docman/view.php/1000261/456/20060709_pg_bulkload.pdf
Regards,
--
Toru SHIMOGAKI<shimogaki.toru@xxxxxxxxxxxxx>
NTT Open Source Software Center
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