Compared with creating a new process, why is creating a thread generally cheaper?
Correct answer C. A thread shares its process's address space and resources, so far less must be allocated
Explanation
A new process needs its own address space, page tables and resource records, while a new thread reuses the process's memory and open files and needs only a stack, registers and a small control block. Switching between threads of the same process is also cheaper because the memory map stays the same. Threads still need stacks and are still scheduled.
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