I am using postgres 9.4, the default install with "brew install postgres, no tuning at all. BTW if I use postgres.app application the benchmarks run twice as slow!
Why do you think there is such dramatic difference between
EXECUTE 'INSERT INTO ' || quote_ident(partition_name) || ' SELECT ($1).*' USING NEW ;
and
EXECUTE 'INSERT INTO ' || quote_ident(partition_name) || ' VALUES( ($1).*)' USING NEW ;
One is thirty percent faster than the other. Also is there an even better way that I don't know about.
On 11.3.2015 21:43, Tim Uckun wrote: > Hey I hate to bump my post but I would really appreciate some input > on this benchmark. I am very alarmed that adding a very simple > partitioning trigger slows the insert speed by an order of magnitude. > Is there any way to speed this up?
I think to actually give you a meaningful response, we really need more details about your configuration - what PostgreSQL version are you using, what configuration have you changed from the defaults and such.
Anyway, you're right that triggers are not cheap. The numbers I get on the development version with a bit of tuning look like this:
