"Kevin Grittner" <[email protected]> writes:
> Fuzzy thinking there -- if it's the last quarter of the *free* pages,
> the suggested probabilities should be fine. (Somehow I got to
> thinking, for a moment, that it would be the last quarter of the
> relation's overall pages....)
It's going to be the latter --- we do not know, and are *not* going to
invest the cycles to find out, how many pages have a useful amount of
free space. Even finding out the relation physical length might be
more cycles than we want to spend here ...
regards, tom lane
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