Re: How long should it take to insert 200,000 records? - Mailing list pgsql-performance

Karen Hill wrote:

>
> The postgres version is 8.2.1 on Windows.   The pl/pgsql function is
> inserting to an updatable view (basically two tables).
>
> CREATE TABLE foo1
> (
>
>
> ) ;
>
> CREATE TABLE foo2
> (
>
> );
>
> CREATE VIEW viewfoo AS
> (
>
> );
> CREATE RULE ruleFoo AS ON INSERT TO viewfoo DO INSTEAD
> (
>
> );
>
> CREATE OR REPLACE FUNCTION functionFoo() RETURNS VOID AS $$
> BEGIN
> FOR i in 1..200000 LOOP
> INSERT INTO viewfoo (x) VALUES (x);
> END LOOP;
> END;
> $$ LANGUAGE plpgsql;
>


Sorry - but we probably need *still* more detail! - the definition of
viewfoo is likely to be critical. For instance a simplified variant of
your setup does 200000 inserts in 5s on my PIII tualatin machine:

CREATE TABLE foo1 (x INTEGER);

CREATE VIEW viewfoo AS SELECT * FROM foo1;

CREATE RULE ruleFoo AS ON INSERT TO viewfoo DO INSTEAD
(
  INSERT INTO foo1 VALUES (new.x);
)

CREATE OR REPLACE FUNCTION functionFoo() RETURNS VOID AS $$
BEGIN
     FOR i in 1..200000 LOOP
         INSERT INTO viewfoo (x) VALUES (i);
     END LOOP;
END;
$$ LANGUAGE plpgsql;


postgres=# \timing
postgres=# SELECT functionFoo() ;
  functionfoo
-------------

(1 row)

Time: 4659.477 ms

postgres=# SELECT count(*) FROM viewfoo;
  count
--------
  200000
(1 row)

Cheers

Mark