Re: calling procedures is slow and consumes extra much memory againstcalling function

so 16. 5. 2020 v 0:34 odesílatel Ranier Vilela <ranier.vf@gmail.com> napsal:

Em dom., 10 de mai. de 2020 às 17:21, Pavel Stehule <pavel.stehule@gmail.com> escreveu:

Hi

I try to use procedures in Orafce package, and I did some easy performance tests. I found some hard problems:

1. test case

create or replace procedure p1(inout r int, inout v int) as $$

begin v := random() * r; end

$$ language plpgsql;

This command requires

do $$
declare r int default 100; x int;
begin
  for i in 1..300000 loop
     call p1(r, x);
  end loop;
end;
$$;

about 2.2GB RAM and 10 sec.

I am having a consistent result of 3 secs, with a modified version (exec_stmt_call) of your patch.
But my notebook is (Core 5, 8GB and SSD), could it be a difference in the testing hardware?

My notebook is old T520, and more I have a configured Postgres with --enable-cassert option.