Re: Updated FSM display for VACUUM VERBOSE

pgman wrote:
> INFO: free space map: 49 relations with free space, maximum of 1000 relations trackable
> INFO: 17266 pages stored, 18000 pages used (with overhead)
> INFO: 18768 pages required to store all freespace, maximum of 18000 pages allocatable (171 kB)
> NOTICE: the number of page slots needed (18768) exceeds max_fsm_pages (18000)
> HINT: Consider increasing the configuration parameter "max_fsm_relations"
> to a value over 18768.
>
> I find this output cleaner and easier to understand. The "pages used"
> value will match either the "required" or "maximum" value on the line
> below.

The "pages used" sentence above is wrong, and it seems the computation
is wrong too. I just connected to another database, created, inserted,
and deleted rows from a table and see:

INFO: free space map: 50 relations with free space, maximum of 1000
relations trackable
INFO: 17266 pages stored, 18016 pages used (with overhead)
INFO: 18784 pages required to store all freespace, maximum of 18000
pages allocatable (171 kB)
NOTICE: the number of page slots needed (18784) exceeds max_fsm_pages
(18000)
HINT: Consider increasing the configuration parameter "max_fsm_relations"
to a value over 18784.

The 'pages used' is greater than 18000, which isn't possible. Seems I
have more work to do.

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