LilyPond speed. Idea for Schikkers list

[Janek Warchoł]

Hi,

how fast would be LilyPond if we turned off collision detecting,
optical spacing, line breaking, beam quanting and sloping, slur
shaping, etc etc etc - basically everything except placing symbols on
paper in one infinately long system?
I thought this can be checked by remowing all possible engravers, but
doing so would prevent any symbols from appearing on staff...
Can you give any estimate?

Janek