Function min_len_for_bytes 

pub fn min_len_for_bytes<T>() -> usize

Minimum items per task for a loop whose cost is the bytes it moves.

The type parameter is the element the loop streams, usually the packed field type. A loop zipping several streams names an array type to count all of them. A three-element array charges one item for three words.

Returns

The number of items one task must take to move the byte budget.