Alvaro,
>> On the other hand, I'd been keen on a runtime suset autovaccum=on/off
>> which we could call from a cron job or the pgadmin scheduler in order to
>> have maintenance windows. Unless that's already becoming possible?
>
> autovacuum=on/off is already SIGHUP as of 8.3 (not SUSET, since it makes
> no sense to change it in a single connection).
Right. What I'm saying is that if it *didn't* require a sighup, then
users could cronjob starting and stopping Autovac themselves.
--Josh