> Is the number of deleted tuples sufficient to decide priority on vacuum? My
> thinking is that the tables with the most deleted tuples is the table which
> need most vacuum. Should ratio of deleted tuples vs total tuples or just count
> of deleted tuples. I am thinking ratio, but maybe it need be tunable.
Deleted or updated. Both expire tuples. Also, the old tuples can't be
vacuumed until no other transaction is viewing them as active.
> (4) If the tables eligible to be vacuumed have deleted tuples which exceed
> acceptable limits, vacuum them.
Seems you will measure in percentages, right?
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