Re: Create tables performance

Yes, you're right ! The process checks if all these tables exist before creating them. So it might be the SELECT that takes time. To check existence, I use the following query : 
select * from pg_tables where tablename='the_table'; 
May be it's not the best way. And I launch a query per table ! Not good at all. 

Thank you all, I will optimize this. 

Sylvain 

----- Mail original -----

> On Sun, Jul 8, 2012 at 11:49 PM, Sylvain CAILLET
> <scaillet@alaloop.com> wrote:
> > Hi,
> >
> > Thank you all for your help.
> >
> > @Jeff : my daemon creates these tables at start time so it doesn't
> > do
> > anything else at the same time. The CPU is loaded between 20% and
> > 25%.

> How does it decide which tables to create? Is it querying the
> existing tables to figure out what new ones to make? Is the rest of
> the time going to IO wait?

> Cheers,

> Jeff