David Fetter <david@fetter.org> writes:
> Is there some large impact of setting this to be on by default?
A UDP send() per command, plus the ensuing activity in the pgstats
processes (which are by default activated only by backend start/stop).
If you want it to be on by default, I think the onus is on you to prove
that it's *not* significant, not vice versa.
regards, tom lane