Ron <ronljohnsonjr(at)gmail(dot)com> writes:
> On 6/29/21 11:42 AM, Tom Lane wrote:
>> If there's a significant difference in relallvisible fractions, that
>> would point to something different in your VACUUM housekeeping on
>> the two systems.
> Prod is brand new. Loaded on Saturday; we saw this problem on Sunday during
> pre-acceptance. Thus, while running ANALYZE was top of the list of Things
> To Do, running VACUUM was low.
> Is that a mistaken belief?
ANALYZE won't update relallvisible AFAIR, while VACUUM will.
So if you are depending on lots of IOS, you need a round of
vacuuming.
regards, tom lane