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CREATE EXTENSION prioritize;
-- Default priority is of course 0, but some Debian buildds run at 10
SELECT get_backend_priority(pg_backend_pid()) BETWEEN 0 AND 10 AS get_backend_priority;
get_backend_priority
----------------------
t
(1 row)
SELECT set_backend_priority(pg_backend_pid(), -5);
WARNING: setpriority(): permission denied
set_backend_priority
----------------------
f
(1 row)
SET client_min_messages = warning;
SELECT set_backend_priority(pg_backend_pid(), 15);
set_backend_priority
----------------------
t
(1 row)
RESET client_min_messages;
SELECT get_backend_priority(pg_backend_pid());
get_backend_priority
----------------------
15
(1 row)
SELECT get_backend_priority(1);
WARNING: PID 1 is not a PostgreSQL server process
get_backend_priority
----------------------
(1 row)
SELECT set_backend_priority(1, 5);
WARNING: PID 1 is not a PostgreSQL server process
set_backend_priority
----------------------
f
(1 row)
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