[GENERAL] tuple statistics update

[Tom DalPozzo]

Hi, I'm using libpq to insert tuples in my table and keep looking at
statistics through psql instead.
I noticed that sometimes n_tuple_ins is not updated even after 1 min that
my transaction committed.
My libpq connection is kept alive. If I close the connection then the stats
get updated.
I know that stats are not instantaneous, but I thought that after a while
that a transaction is committed it would be updated.
Regards
Pupillo