At 06:01 PM 6/14/2001 +0200, Ivan Prenosil wrote:

>....
> > The extra two bits are free space indicators which are stored at
> > the bottom of the pointer page - two bits per data page.
>
>I assume it distinguishes [empty / full / half-empty] page.

It appears to use only one bit. The real space management stuff
is in the pointer page header, which contains these two items:

USHORT ppg_min_space; /* Lowest slot with space available */
USHORT ppg_max_space; /* Highest slot with space available */

See dpm.e, mark_full.

>OTOH, now if FB supports 64-bit I/O, more people will use it for large
>databases ...

Thank you for reminding me...


Cheers,

Ann