Robert Creager <Robert_Creager@StorageTek.com> writes:
> Alright. Restarted the 803 database. Cron based vacuum analyze is
> running every 5 minutes. vacuum_cost_delay is 0. The problem showed
> up after about 1/2 hour of running. I've got vacuum jobs stacked from
> the last 35 minutes, with 2 vacuums running at the same time. CS is
> around 73k.
Hmm, I hadn't thought about the possible impact of multiple concurrent
vacuums. Is the problem caused by that, or has performance already gone
into the tank by the time the cron-driven vacuums are taking long enough
to overlap?
regards, tom lane
