PostgreSQL performance on ARM i.MX6

Hi there,

I am investigating possible throughput with PostgreSQL 14.4 on an ARM i.MX6 Quad CPU (NXP sabre board).
Testing with a simple python script (running on the same CPU), I get ~1000 request/s.

import psycopg as pg
conn = pg.connect('dbname=test')
conn.autocommit = True
cur = conn.cursor()
while True:
cur.execute("call dummy_call(%s,%s,%s, ARRAY[%s, %s, %s]::real[]);", (1,2,3, 4.0, 5.0, 6.0), binary=True )

where the called procedure is basically a no-op:

CREATE OR REPLACE PROCEDURE dummy_call(
in arg1 int,
in arg2 int,
in arg3 int,
in arg4 double precision[])
AS $$
BEGIN
END
$$ LANGUAGE plpgsql;

This seems to be a quite low number of requests/s, given that there are no changes to the database.
Looking for suggestions what could cause this poor performance and where to start investigations.

Thanks,

Marc

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