Longest Increasing Substring Given a list of positive integers, write code that finds the length of longest contiguous sub-list that is increasing (not strictly).  That is the longest sublist such that each element is greater than or equal to the last.

For example if the input was:

\$[1,1,2,1,1,4,5,3,2,1,1]\$

The longest increasing sub-list would be \$[1,1,4,5]\$, so you would output \$4\$.

Your answer will be scored by taking its source as a list of bytes and then finding the length of the longest increasing sub-list of that list.  A lower score is the goal. Ties are broken in favor of programs with fewer overall bytes.
Pyth, score 2 (8 bytes)

lefSIT.:


Try it here!

Code points [108, 101, 102, 83, 73, 84, 46, 58]. Another shorter solution, leSI#.: scores 3, but its code points are [108, 101, 83, 73, 35, 46, 58], which are very close to a score of 1, actually. Rearranging a bit may help Nevermind, the substrings built-in is .: which cannot be rearranged, so the lowest score must be 2 if the program makes use of it.

How?

lefSIT.:     Full program. Accepts either a list or a string from STDIN.
      .:     Substrings.
  f  T       Only keep those that are...
   SI        Sorting-Invariant.
le           Length of the last item.