depends ... if it's about maintainability in general less is better and the cyclomatic complexity should not be that high .... but most interpreter don't optimize in that way and are just reading something from a file and cache it for N-iterations.
for example doing this in PHP5 (not as extension) PSR-4 compatible is, at least performance wise, just stupid. doing this in smalltalk or java which in the end compiles, inlines and optimizes the shit out of it is smart.
I'm more a 1 to 10 lines per method person and like to use the flyweight pattern, but if you think about controllers and routes, which are basically facade patterns, the question of semantic grouping and SOC (abstraction into service layers) is more important too me than the ideal length of characters in File....
as always imho this is more about taste ...