Re: batch inserts are "slow" - Mailing list pgsql-performance

From Christopher Petrilli
Subject Re: batch inserts are "slow"
Date
Msg-id [email protected]
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In response to batch inserts are "slow"  (Tim Terlegård <[email protected]>)
Responses Re: batch inserts are "slow"
List pgsql-performance
On 5/2/05, Tim Terlegård <[email protected]> wrote:
> Howdy!
>
> I'm converting an application to be using postgresql instead of oracle.
> There seems to be only one issue left, batch inserts in postgresql seem
> significant slower than in oracle. I have about 200 batch jobs, each
> consisting of about 14 000 inserts. Each job takes 1.3 seconds in
> postgresql and 0.25 seconds in oracle. With 200 jobs this means several
> more minutes to complete the task. By fixing this I think the
> application using postgresql over all would be faster than when using
> oracle.

Just as on Oracle you would use SQL*Loader for this application, you
should use the COPY syntax for PostgreSQL.  You will find it a lot
faster.  I have used it by building the input files and executing
'psql' with a COPY command, and also by using it with a subprocess,
both are quite effective.

Chris
--
| Christopher Petrilli
| [email protected]

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