pg_foobar

foo bar parallel programing on PostgreSQL

Supports 9.6, 10-beta1.

Installation

$ git clone [email protected]:MasahikoSawada/pg_foobar.git
$ cd pg_foobar
$ make USE_PGXS=1
$ su
# make install USE_PGXS=1

Set up PostgreSQL server

$ initdb -D $PGPATH -E UTF8 --no-locale
$ pg_ctl start
$ psql
=# CREATE EXTENSION pg_foobar;
=# ¥dx
                  List of installed extensions
   Name    | Version |   Schema   |         Description
-----------+---------+------------+------------------------------
 pg_foobar | 1.0     | public     | foo bar game
 plpgsql   | 1.0     | pg_catalog | PL/pgSQL procedural language
(2 rows)

Usage

pg_foobar extension provides one function pg_foobar(nworkers, foo_count, bar_count) which launches nworkers parallel workers that emits 'foo' at foo_count times and emits 'bar' at bar_count times to PostgreSQL server log file. For example,

=# SELECT pg_foobar(2, 3, 4);
 pg_foobar
-----------

(1 row)
$ cat /path/to/postgresql.conf
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] foo 0
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] foo 1
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] foo 0
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] foo 2
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] bar 0
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] foo 1
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] bar 1
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] foo 2
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] bar 2
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] bar 0
2016-12-09 16:17:44.482 JST [47495] LOG:  worker [1] bar 3
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] bar 1
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] bar 2
2016-12-09 16:17:44.482 JST [47496] LOG:  worker [0] bar 3