"Jeffrey Baker" <jwbaker@gmail.com> writes:
> This autovacuum has been hammering my server with purely random i/o
> for half a week. The table is only 20GB and the i/o subsystem is good
> for 250MB/s sequential and a solid 5kiops. When should I expect it to
> end (if ever)?
What have you got maintenance_work_mem set to? Which PG version
exactly?
regards, tom lane