I have a query that takes 2 sec if I run it from a freshly restored
dump. If I run a full vacuum on the database it then takes 30 seconds.
Would someone please comment as to why I would see a 15x slow down by
only vacuuming the DB? Reindexing does not help, and a full vacuum was
run just prior to the dump.
I run a full vacuum every night.
I am using 8.3.1