Comment by psanford

I saw a bug once where an application would get way slower on MacOS after calling fork(). Not just temporarily either; many syscalls would continue to run slowly from the call to fork() until the process exited.

Looking on Stack Overflow, I see a few reports of this behavior[0][1].

[0]: https://stackoverflow.com/questions/4411840/memory-access-af...

[1]: https://stackoverflow.com/questions/27932330/why-is-tzset-a-...