Re: Explaining functions.

Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> On Tue, Jun 23, 2009 at 8:03 AM, Hartman,
> Matthew<Matthew(dot)Hartman(at)krcc(dot)on(dot)ca> wrote:
>> Is there a recommended approach when trying to use EXPLAIN on a
>> function? Specifically, a function that is more than the typical SELECT
>> statement or tiny loop. The one in question that I'm hoping to optimize
>> is around 250 lines.

> What I normally do for benchmarking of complex functions is to
> sprinkle the source with "raise notice '%', timeofday();" to figure
> out where the bottlenecks are. Following that, I micro-optimize
> problem queries or expressions outside of the function body in psql.

There was some discussion once of using the same infrastructure the
plpgsql debugger uses to build a plpgsql profiler. That would help
automate the first part of this, at least. Anybody know the status
of that project?

regards, tom lane