I was wondering this, is it because they only need a stack and storage for registers so they are cheap to create ?
Thanks a lot :)
Why does it take longer to call a fork() than it does to call pthread_create()?
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fork()has to clone the entire process and all its associated kernel data structures, including file handles, memory, and so forth. Though this might be done lazily by setting appropriate copy-on-write flags, it is a lot more work than creating a new thread, which just shares the same file handles and memory.