From: Craig A. James <cjames@modgraph-usa.com>
To: Mikael Carneholm <Mikael.Carneholm@WirelessCar.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Migration study, step 1: bulk write performance optimization
Date: Mon, 20 Mar 2006 07:12:18 -0800
Message-ID: <441EC652.1010807@modgraph-usa.com> (raw)
In-Reply-To: <7F10D26ECFA1FB458B89C5B4B0D72C2B088286@sesrv12.wirelesscar.com>
References: <7F10D26ECFA1FB458B89C5B4B0D72C2B088286@sesrv12.wirelesscar.com>
Mikael Carneholm wrote:
> I am responisble for an exciting project of evaluating migration of a
> medium/large application for a well-known swedish car&truck manufacturer
> ... The goal right now is to find the set of parameters that gives as
> short bulk insert time as possible, minimizing downtime while the data
> itself is migrated.
If you haven't explored the COPY command yet, check it out. It is stunningly fast compared to normal INSERT commands.
http://www.postgresql.org/docs/8.1/static/sql-copy.html
pg_dump and pg_restore make use of the COPY command. Since you're coming from a different vendor, you'd have to dump the data into a COPY-compatible set of files yourself. But it will be worth the effort.
Craig
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To: pgsql-performance@postgresql.org
Cc: cjames@modgraph-usa.com, Mikael.Carneholm@WirelessCar.com
Subject: Re: Migration study, step 1: bulk write performance optimization
In-Reply-To: <441EC652.1010807@modgraph-usa.com>
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