Galy Lee <lee(dot)galy(at)oss(dot)ntt(dot)co(dot)jp> writes:
> I am worrying about the worker-to-do-list in your proposal. I think
> worker isn't suitable to maintain any vacuum task list; instead
> it is better to maintain a unified vacuum task queue on autovacuum share
> memory.
Shared memory is fixed-size.
regards, tom lane