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

Em sáb., 16 de mai. de 2020 às 00:07, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
escreveu:

>
>
> so 16. 5. 2020 v 0:34 odesílatel Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>
> napsal:
>
>> Em dom., 10 de mai. de 2020 às 17:21, Pavel Stehule <
>> pavel(dot)stehule(at)gmail(dot)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.
>
The hardware is definitely making a difference, but if you have time and
don't mind testing it,
I can send you a patch, not that the modifications are a big deal, but
maybe they'll help.

regards,
Ranier Vilela