We are assuming that Phabricator can afford 100.000 tasks, 100s of repos and the load of contributions that our Bugzilla + Gerrit handle with good performance and uptime reliability. The theoretical case we are assuming is "If it woks for Facebook, it should work for us".
Is there a way to run a simulation and test the results before Day 1? Having data about other big Phabricator instances would be good as well.