[Tom Lane - Tue at 02:26:53PM -0400] > > autovacuum_vacuum_cost_delay = 500 > > autovacuum_vacuum_cost_limit = 200 > > Well, that's going to cause it to sleep half a second after every dozen > or so page I/Os. I think you'd be well advised to reduce the delay. Modified it to 20/250, and it definitively helped. Sorry for the list verbosity; I should have been able to resolve this myself already some 2-3 emails ago :-) I wanted a "soft" introduction of autovac in production, and assumed that it was better to begin with too much sleep than too little! Well, well.
