Re: [htdig-dev] Compression related performance

[David B. <dav...@bo...>]

Observation: almost all of the difference in file size 
between the compressed and non-compressed cases
can be accounted for by the free bytes in leaf pages.
Therefore, if the file were to be re-built inserting all the keys
in key sort order, the resulting file (sans compression)
should be quite close in size to the compressed one.
I believe it should be possible to test this theory
using db_dump and db_load back-to-back.

>   436043776 Jan 15 00:00 db.words.db
...
>   113773568 Jan 14 09:36 db.words.db
...
>188M    Number of bytes free in tree leaf pages (57% ff).