> It occured to me that the gap between entries index and the
> entries is probably not filled with 0 but with random data. If this is
> the case it would explain why a file with 60% fill does not compress as
> well as a file with 99% fill. Can you confirm this ? If you can't I'll
> have a closer look (just checked by opening db file in emacs).

If the page has been free'd and re-allocated that is the
case, but otherwise it should be all 0s (assuming DB is
running under a OS/filesystem that initializes new pages
from the disk store or from heap).

--keith


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