#+RESULTS:
: # of src block names: 3
: Number of Seconds: 0.0498
#+RESULTS:
: # of src block names: 68
: Number of Seconds: 2.1021
#+RESULTS:
: # of src block names: 200
: Number of Seconds: 15.4018
#+RESULTS:
: # of src block names: 266
: Number of Seconds: 26.6689
#+RESULTS:
: # of src block names: 332
: Number of Seconds: 41.2211
So my mental count of 10 seconds for 200 blocks was a bit off.
And the time is very nearly quadratic in the number of named src blocks: