> If I deleted 75% of the rows but had a max_fsm_pages
> setting that still exceeded the pages required (as
> indicated in VACUUM output), would that solve my
> indexing problem or would I still need to REINDEX
> after such a purge?

Depends on the performance you're expecting.    The FSM relates the the re-use 
of nodes, not taking up free space.   So after you've deleted 75% of rows, 
the index wouldn't shrink.  It just wouldn't grow when you start adding rows.


Josh Berkus
Aglio Database Solutions
San Francisco

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