

My understanding is that it’s only slightly slower: the OS maintains a pool of zeroed pages anyway, so it’s not like your program has to iterate over all the addresses and write to them.
But it’s been a long time since I’ve done any C/C++ so I could be wrong.



My understanding is that Facebook’s culture is very cutthroat. Throw other people under the bus, try to make your rivals’ project fail, do a huge unnecessary refactor to “make a name” for yourself, that sort of stuff.