It's silly to point at this documentation as if this is something that people will read in this case. People, or specifically web developers are not calling fork(). What they're doing is using supported language, a webapp server, using a database access library, and enabling the preloading option. As seen in the bug report in Ruby, this comes down to coordination between those projects. Each one is correct on their own. Putting them together as a web developer shouldn't involve analysing syscalls you're going to make either.