Re: How to force PostgreSQL to use multiple cores within one connection?

If you happen to be using JDBC you can also get copy to work:

http://kato.iki.fi/sw/db/postgresql/jdbc/copy/

On Wed, Oct 1, 2008 at 9:24 AM, Merlin Moncure <mmoncure(at)gmail(dot)com> wrote:

> On Wed, Oct 1, 2008 at 6:44 AM, Sergey A. <n39052(at)gmail(dot)com> wrote:
> > Hello.
> >
> > My application generates a large amount of inserts (~ 2000 per second)
> > using one connection to PostgreSQL. All queries are buffered in memory
> > and then the whole buffers are send to DB. But when I use two
> > connections to PostgreSQL instead of one on dual core CPU (i.e. I use
> > two processes of PostgreSQL) to insert my buffers I see that things
> > goes 1.6 times faster.
> >
> > Using several connections in my application is somewhat tricky, so I
> > want to move this problem to PostgreSQL's side. Is there any method
> > for PostgreSQL to process huge inserts coming from one connection on
> > different cores?
>
> If you are buffering inserts, you can get an easy performance boost by
> using copy as others have suggested. Another approach is to use
> mutli-row insert statement:
>
> insert into something values (1,2,3), (2,4,6), ...
>
> Using multiple cpu basically requires multiple connections. This can
> be easy or difficult depending on how you are connecting to the
> database.
>
> merlin
>
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