I would like to configure the autovacuum in a way that it runs very frequently (i.e. after each update-statement). I tried the following settings on my table:
alter table mytable set (autovacuum_vacuum_scale_factor = 0.0);
alter table mytable set (autovacuum_vacuum_cost_delay = 0.0);
alter table mytable set (autovacuum_vacuum_cost_limit = 10000);
alter table mytable set (autovacuum_vacuum_threshold = 1);
I do a lot of updates on a single tuple and I would expect that the autovacuum would start basically after each update (due to autovacuum_vacuum_threshold=1). But the autovacuum is not running.
Presuming that the field you're updating is not indexed, and the table can be exclusively locked for as long as it takes to rewrite it: give the table "more space to work" in each page: