I ran lmh against mmt rbuild (=mrbuild) and I get a factor of about 20:
Michaels-MacBook-Pro:MathHub kohlhase$ time lmh sms --force . | wc
3378 10134 335333
real 0m36.340s
user 0m0.676s
sys 0m0.266s
Michaels-MacBook-Pro:MathHub kohlhase$ time mrbuild sms --force . | wc
3378 10134 355601
real 0m1.694s
user 0m4.132s
sys 0m0.764s
Michaels-MacBook-Pro:MathHub kohlhase$
`
the ```|wc``` is just to see if they make the same files.
A corresponding observation is that lmh seems to pause and think (for a minute or 5) from time to time and then just continue.
I ran
lmh
againstmmt rbuild
(=mrbuild
) and I get a factor of about 20: