Alvaro Herrera wrote:
This is how I think autovacuum should change with an eye towards being able to run multiple vacuums simultaneously:
[snip details]
Does this raise some red flags? It seems straightforward enough to me; I'll submit a patch implementing this, so that scheduling will continue to be as it is today. Thus the scheduling discussions are being deferred until they can be actually useful and implementable.
I can't really speak to the PostgreSQL signaling innards, but this sound logical to me. I think having the worker processes be children of the postmaster and having them be single-minded (or single-tasked) also makes a lot of sense.
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