On 2014-12-02 12:22:42 -0800, Jeff Janes wrote:
> Or maybe I overestimate how hard it would be to make vacuum
> restartable.

That's a massive project. Which is why I'm explicitly *not* suggesting
that. What I instead suggest is a separate threshhold after which vacuum
isn't going to abort automaticlaly after a lock conflict. So after that
threshold just behave like anti wraparound vacuum already does.

Maybe autovacuum_vacuum/analyze_force_threshold or similar. If set to
zero, the default, that behaviour is disabled. If set to a positive
value it's an absolute one, if negative it's a factor of the normal
autovacuum_vacuum/analyze_threshold.


Greetings,

Andres Freund


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