[Tom Lane - Tue at 02:04:55PM -0400]
> > It seems stuck, has had the same transid for a long while, and the
> > number of undeletable dead rows in our tables are increasing.
>
> Perhaps you have overly aggressive vacuum cost delay settings?
Perhaps, though I wouldn't expect it to sleep in the middle of a
transaction - and also, it really did seem to me that it's doing work
rather than only sleeping.
The transaction id for the vacuum process is the same now as when I
wrote the previous email, and the number of dead unremovable rows have
increased steadily.
The settings in effect are:
autovacuum_vacuum_cost_delay = 500
autovacuum_vacuum_cost_limit = 200
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