# SYNOPSIS
-bup margin
+bup margin [options...]
# DESCRIPTION
margin` occasionally to see if you're getting dangerously
close to 160 bits.
-# EXAMPLE
+# OPTIONS
+\--predict
+: Guess the offset into each index file where a
+ particular object will appear, and report the maximum
+ deviation of the correct answer from the guess. This
+ is potentially useful for tuning an interpolation
+ search algorithm.
+
+\--ignore-midx
+: don't use `.midx` files, use only `.idx` files. This is
+ only really useful when used with `--predict`.
+
+
+# EXAMPLES
$ bup margin
- Reading indexes: 100.00% (11188299/11188299), done.
- 45
+ Reading indexes: 100.00% (1612581/1612581), done.
+ 40
+ 40 matching prefix bits
+ 1.94 bits per doubling
+ 120 bits (61.86 doublings) remaining
+ 4.19338e+18 times larger is possible
+
+ Everyone on earth could have 625878182 data sets
+ like yours, all in one repository, and we would
+ expect 1 object collision.
+
+ $ bup margin --predict
+ PackIdxList: using 1 index.
+ Reading indexes: 100.00% (1612581/1612581), done.
+ 915 of 1612581 (0.057%)
# SEE ALSO