Stephen Frost <sfrost@snowman.net> writes:
> I agree that 'constantly' wouldn't be great, but with some periodicity
> that's more frequent than 'not until a few hours later when we finally
> finish vacuuming this relation' would be nice. At least with autovauum
> we may be periodically sleeping anyway so it doesn't seem like polling
> at that point would really be terrible, though it'd be nice to check
> every once in a while even if we aren't sleeping.
Maybe put a check into vacuum_delay_point, and poll the pipe when we're
about to sleep anyway? That wouldn't fix anything except autovacuum,
but if you're right that that's a primary pain point then it'd help.
regards, tom lane