> This proposal is just "hints by the back door", ISTM. As Tom says, there is
> a justification for having it on tablespaces but not on individual tables.
If the parameter is defined as "the chance that a page is in cache"
there is very real physical meaning to it. And this is per-table, not
per-tablespace. A "users" table will likely be fetched from cache all
the time, while a "billing_records" table will be fetched mostly from
disk.
Greetings
Marcin
