ulobabacan

In these days, how long does it take for a H1b holding engineer from a "rest of the world" country to get green card via EB2(or EB3 if faster) from the day the current company starts the progress?

Also at what stage he/she can change the job?

I'm curious, how long is the lock-in for people from "rest of the world" category for H1B to green card process? It looks like there's almost no backlog these days.