Re: Second attempt, roll your own autovacuum

Csaba Nagy wrote:
>> Alternatively, perhaps a threshold so that a table is only considered 
>> for vacuum if:
>>    (table-size * overall-activity-in-last-hour) < threshold
>> Ideally you'd define your units appropriately so that you could just 
>> define threshold in postgresql.conf as 30% (of peak activity in last 100 
>> hours say).
> 
> No, this is definitely not enough. The problem scenario is when
> autovacuum starts vacuuming a huge table and that keeps it busy 10 hours
> and in the meantime the small but frequently updated tables get awfully
> bloated...

Ah (lightbulb goes on)! I see what you mean now.

-- 
   Richard Huxton
   Archonet Ltd