In order to get a handle on the performance implications of porting Parsoid to PHP, we need to evaluate the different components of Parsoid.
One of these components in the wt -> html direction are the various DOM transformers.
Initial experiments in Feb 2018 indicated that the performance of DSR computation (after porting that to PHP) is faster in PHP - likely due to the C-backed DOM implementation.
This task is to do some of that evaluation a bit more systematically on the DSR pass and maybe one other pass and document the results here.