October 2018
Beginner
794 pages
19h 23m
English
In Chapter 10, Process Creation, we repeatedly pointed out that although the fork(2) system call is very powerful and useful, it's considered to be a heavyweight operation; performing the fork takes a lot of CPU cycles (and thus time) and is expensive in terms of memory (RAM), too. Computer scientists were looking for a way to lighten this; the result, as you have guessed, is the thread.
Hang on, though: for the convenience of the reader, we reproduce a diagram—The Linux process – inheritance and non-inheritance across the fork()—from Chapter 10, Process Creation:
