wip: turbo-analyze

README.md

@@ -218,7 +218,7 @@ is `home_len`. The same logic applies to all the `stringdata` fields: there is
 a way to calculate their relative position from the length of the fields before
 them.
 
-PackedUser employs two "simple" compression techniques:
+PackedUser employs two data-oriented compression techniques:
 - shells are often shared across different users, see the "Shells" section.
 - `name` is frequently a suffix of `home`. For example, `/home/vidmantas` and
   `vidmantas`. In this case storing both name and home is wasteful. Therefore
@@ -331,10 +331,10 @@ will be pointing to a number `n ∈ [0,N-1]`, regardless whether the value was i
 the initial dictionary. Therefore one must always confirm, after calculating
 the hash, that the key matches what's been hashed.
 
-`idx_*` sections are of type `[]u32` and are pointing to the respective
-`Groups` and `Users` entries (from the beginning of the respective section).
-Since User and Group records are 8-byte aligned, the actual offset to the
-record is acquired by right-shifting this value by 3 bits.
+`idx_*` sections are of type `[]u32` and are pointing from `hash(key)` to the
+respective `Groups` and `Users` entries (from the beginning of the respective
+section). Since User and Group records are 8-byte aligned, the actual offset to
+the record is acquired by right-shifting this value by 3 bits.
 
 Database file structure
 -----------------------