4 ms·

I'm not familiar with undo.io's products; would be curious to hear people's thoughts on how they compare to rr-project.org.

• mark_undoio 4y ago
  See roca's post earlier for some information from the original rr dev regarding their pernos.co service. The principles are very similar - each has some advantages over the other but as an Undoer I have an obvious bias as to which I prefer ;-) rr uses snapshots and deterministic repay in the same way, though they ensure determinism differently. I don't know if rr can do parallel reverse ops but evidently Pernosco does parallel pre-processing to build its database (which is magic as it then allows very fast queries about program state).
  • khuey 4y ago
    rr doesn't have an equivalent of the feature you're announcing here. reverse-execution only consumes a single core.